One of the most popular optional subjects on the UPSC Civil Services Exam is public administration. It is the best optional subject for the UPSC, which is also one of the best options for applicants. It offers a wide range of benefits and advantages that make it an attractive choice for aspiring civil servants. Here are some reasons why you should consider choosing Public Administration as your optional subject: Extensive Study Material Availability: Public Administration for UPSC offers a vast array of study materials, readily accessible in libraries, books, journals, websites, and newspapers. The subject's extensive study material, Public Administration Test Series availability ensures you can find books, articles, and info everywhere.