I want to become an IAS officer. Which subject should I study in graduation to have maximum benefit in UPSC exam?

You can go for the course of UPES, which is BA in public policy and administration. This university, along with this graduation degree provides classes for IAS preparation. You can check their website for further details.

The subject you choose in graduation has nothing to do with UPSC. You must have a graduation degree from a recognized institute, this is all what is needed. After graduation or in the last year of your graduation you must start preparation for UPSC. You can choose any subject in your graduation in