There’s no ideal UPSC optional subject: it depends on your background, interests, and access to learning resources. However, some electives are more popular and have performed better over time. Check out previous year’s papers and the strategies of top candidates before finalizing your registration. Avoid choosing an elective just because it’s trendy; focus on one that matches your strengths. Here are some interesting options, however:

• Anthropology: Short syllabus, graded, ideal for science graduates
• Sociology: Easy to understand, overlaps with GS I and the dissertation
• Geography: Visual, map-based learning, overlaps with GS I and GS III
• PSIR (Political Science and International Relations): Excellent overlap with GS II and the dissertation
• Public Administration: Popular with working professionals, overlaps with GS II
• History: Useful for GS I, the dissertation, and the preliminaries
• Philosophy: Short syllabus, conceptual clarity required
• Literature: Ideal for those with a strong grasp of a language