Hi

You can choose any of science ,commerce or arts stream based on your interest after your 10th for your 10 +2 and then for graduation if you want to become an IFS officer.

This is because,

to become an IFS officer you need to clear UPSC civil services examination and to be eligible for UPSC  examination there is no compulsion to have done 10+2 in a particular stream , also there's 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 are free to do 10+2 and graduation in any subject.

But yes,

choosing Arts or the humanities in your 10+2 and BA in your graduation 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.

To help you further here's a brief of your UPSC exam

UPSC civil services examination has 3 stages listed below :-

*prelims exam :- it is objective paper and is of qualifying nature and has 2 papers :- general studies 1

and general studies II ( csat )

*Mains exam. :- it is descriptive /written examination . There are a total of 9 papers.

*Interview :- After qualifying mains, you have to go through interview round, and it is more of test of your personality rather than knowledge.

So, if you manage to sail through all the three stages  then congratulations you can become an ifs  officer depending upon  rank obtained by you in UPSC civil services examination ,your preference of services and your category .

For detailed information , I will recommend you to go through our page the link for the same is provided below

https://www.careers360.com/careers/indian-foreign-service-officer#:~:text=Hello%20student%20to%20become%20an,stages%20Preliminary%2C%20Mains%20and%20Interview .

If you have any other doubt then feel free to ask them :) we are always here to help you out and guide you

Thankyou