How To Select The Optional Subject For UPSC Civil Services Mains Exam Choosing an optional subject for the UPSC Civil Services Mains exam is a crucial decision that can significantly impact your overall score. It's best to select a subject that aligns with your strengths, interests, and academic background while also considering factors like syllabus overlap with the General Studies papers and the availability of resources. Read Story- https://www.sociomix.com/c/stories/how-to-select-the-optional-subject-for-upsc-civil-services-mains-exam/1754992564