Hello,

You can take any graduation subject you feel confident in. The humanities subjects will help you with your General studies part of the civil services exam. If you want to continue with the commerce field then there are optional subjects that can help you as your optional subject in civil services exam. The optional related to your field are:  

• Commerce and Accountancy
• Economics
• Mathematics

You can take any one of these as your undergraduate subject and strengthen your optional.

All the best.

Hello Amal

YOu can opt for any graduation degree. But According me BA is best for graduation .During the course you will get advantages of the subjects which are in UPSC civil services Mains .You will not need to prepare for this topic separately you will indeed get advantage for writing skills ,you will able to comprehend a lot your optional subject can also be prepared very well if you do BA But you required to do this from a very good college .I am naming some college below Hindu College Delhi St Xaviers Mumbai Ferguson Pune Fergusson College Pune from this college listed above if you do ba then you will get good atmosphere and good coaching class services for doing this .You will get advantage to listen good speakers during our graduation days  any of the graduation stream .If you do ba then you won't to waste more years for preparation separately. Indeed you can utilise this 3 years in a productive manner .