It is better to put FULL STOP in end. When you give question mark means there is something to talk about.

Conclusion must not end with a question mark. You can give question mark in Introduction to take the attention of reader.

Question mark in End of Essay doesn't suit.

http://www.cssforum.com.pk/off-topic...pic-forum.html

It may help you.

fine... but the conclusion should be left with brain storming in the mind of examiner. that's why i asked because i question at the end gives food of thought. let others should comment about.

Yes, Let others reply too.

Here are more around 15 Essays by CSPs. There is no Question mark in the end of their Essays.

You may check it.

http://www.cssforum.com.pk/css-compu...says-csps.html

USING THESIS STATEMENTS
When you are asked to write an essay that creates an argument, your reader will expect a clear statement of your position. Typically, this summary statement comes in the first paragraph of the essay, though there is no rigid rule about position. Here are some characteristics of good thesis statements, with samples of useful and inadequate ones. Note that the better examples substitute specific argumentative points for sweeping general statements; they indicate a theoretical basis and promise substantial support. (See Myths About Thesis Statements [over] for a discussion of times not to organize your writing around thesis statements.)
1. It makes a definite and limited assertion that needs to be explained and supported by further discussion.
trite, irrelevant Shakespeare was the world's greatest playwright.
intriguing The last scene in Midsummer Night's Dream adds a political dimension to the comedy ending by incorporating subtle linguistic and theatrical references to Elizabeth's position as queen.
2. It shows the emphasis of your argument and indicates its methodology.
emotional, vague This essay will show that the North American Free Trade agreement was a disaster for the Canadian furniture industry.
worth attention Neither neo-protectionism nor post-industrial theory explains the steep reversal of fortune for the Canadian furniture industry in the period 1988-1994. Data on productivity, profits, and employment, however, can be closely correlated with provisions of the North American Free Trade Agreement that took effect in the same period.
3. It shows awareness of difficulties and disagreements.
sweeping, vague Having an official policy on euthanasia just causes problems, as the Dutch example shows.
suitably complex Dutch laws on euthanasia have been praised for their use of the principle of self-determination. Recent cases, however, show that these laws have not been able to deal adequately with issues involving technological intervention on unconscious patients. Hamarckian theory is needed to enlarge the framework used in creating the Dutch law. It provides one way to examine the key question of how to assign rights.
N.B. See over for a discussion of faulty ideas about thesis statements.
Myths about Thesis Statements
and some better ideas
• Every paper requires one.
Assignments that ask you to write personal responses or to explore a subject don't want you to prejudge the issues. Essays of literary interpretation often want you to be aware of many effects rather than seeming to box yourself into one view of the text.
• A thesis statement must come at the end of the first paragraph.
This is a natural position for a statement of focus, but it's not the only one. Some theses can be stated in the opening sentences of an essay; others need a paragraph or two of introduction; others can't be fully formulated until the end.
• A thesis statement must be one sentence in length.
Clear writing is more important than rules like these. Use two or three sentences if you need them. A complex argument may require a whole tightly-knit paragraph to make its initial statement of position.
• You can't start writing an essay until you have a perfect thesis statement.
It's usually a good idea to draft a hypothesis or tentative thesis statement near the start of a big project, but changing and refining a thesis is a main task of thinking your way through your ideas as you write a paper. Some projects need to explore the question in depth without being locked in too early. Think in terms of a possible answer to your question, not a rigid commitment. Then go back and reformulate your introduction once you see how far you get.
• A thesis statement must give three points of support.
It should indicate that the essay will explain and give evidence for its assertion, but points of evidence don't need to come in any specific number. It's also important to consider the range of possible perspectives (including their pros and cons), not just to gather support for one view.

dear your conclusion is good but zohaib is also rite on his approach because if the topic was also in the exclamatory or questioned statement , wanted from you your approach or analysis then you can end just on question mark "?" showing that there are few things that cannot be answered .
but here he wanted you to explain sometthing you can't left something for brain storming in conclusion as you are asked to answer not to ask question hope you understands what my point is

means it will be better to avoid a question at the end of essay., but now it should be ponder over that either a direct question in the mid of essay is recommendable or not??

yes you can for example you are writing on women rights in pakistan for example ; then in the mid you can end any paragraph of body with the question . like while writing on problems can end by saying that "bla bla bla is the problem many resolutions bills have been passed but who knows when these will become reality ?
or in terrorism ;in the ending paragraph of causes of terrorism can say do we know for what reasons this aids of inhuman barbarianism is sucking blood of peace in world ""
then you have to spill the bean in immediate paragraph by writing " may be no one knows the exact motto or plan behind this terrorism but we can cure it by bla bla bla bla solutions "
hope you got my point be relevant and can state a question in the essay paper , but dear avoid question in conclusion to be on the safe side don't try your luck much hard stay blessed

I want to add here about conclusion.

The Essay Conclusion
Does not contain any new information that needs to be supported,
It is at least as short as the introduction,
Typically begins with a transitional word or phrase that signals the reader that the end of the essay is coming,
Usually gives a brief summary of the main idea of the essay,

It Contains 1 or more of the following concluding techniques:
recommendation to the reader about the essay
prediction about future developments of the essay topic
a solution to the major problem presented in the essay, or
a final evaluation of the major ideas discussed in the essay.

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Dear Zuhaib,

thesis statement is always at the end of the introduction paragraph. The introduction paragraph starts with a HOOK to get attention of the reader.
This is what I have learnt when I was in States.

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Start every day with a smile and get it over with.