Its good but subjects are independent of each other I am going to appear in CSS examination 2019 and I have selected the following subjects psychology philosophy environmental science public administration and International relations. in Philosophy there are many topics which are also included in psychology and many topics of environmental Sciences are included in psychology while International relations and public administration are related to each other in many topics. As you know that we should avoid science subjects in examination because they do not give good marks in exam as I am student of software engineering and have recently completed it is I am avoiding to take computer science reason is that it is vast field wine in Arts or theoretical subjects there is a lot of opportunities that we can write against any topic by ourselves so go on with the subjects in which you can perform well and you can easily write about any particular topic given by yourself.

Aur Allah Sabar krny walin k sath hai