@ ibrahim_ceg
The all i understand from your post is this that a person may write against with powerful and persuasive arguments?
suppose we have to write on kala bagh dam, as the current water & power Minister has said that the chapter of kala bagh dam has been closed. And a candidate writes in favour of kala bagh dam by mentioning its benefits and tries to prove that minister's decision is not correct. suppose if he writes all well in favour of kala bagh dam then what will be the decision of examiner/paper checker in marking? as there are many other options rather than kala bagh...... and if the examiner belongs to the current government, than what he will do?