Hi
You can choose any subject or course of your choice based on your interest for your graduation
This is because,
to be eligible for UPSC examination there is no compulsion to be a graduate in a particular subject, all you need to be eligible is that you should be a graduate in any discipline
So you can choose any stream of your interest, but yes if you choose BA or Arts then choosing Arts or the humanities can be really helpful for your UPSC examination, this is because in Arts you will be learning subjects like history , polity etc which are a part of the UPSC syllabus so it will help you in your upsc examination.
So, with respect to UPSC , BA will be a better choice for you.
And yes,
UPSC examination has 3 stages which are listed below :-
*The first stage of the exam is Preliminary examination (objective )
*The second stage, Mains (written).
*If you manage to clear both prelims and mains then you are to go through third stage i.e interview/personality test .
And if you managed to clear all the three rounds mentioned above, then congratulations you may become an ias or ips officer etc based on your preference and the rank obtained by you in UPSC examination
I hope you find this helpful
For detailed information go through
https://competition.careers360.com/articles/upsc-ias-eligibility-criteria/amp
Thank you
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile