The UPSC Civil Services test is an entryway to energising vocations, such as Indian Administrative Service (IAS), Indian Foreign Service (IFS), Indian Revenue Service (IRS), and Indian Police Service (IPS), Thousands of people attempt this prestigious administration test. Due to the limited number of seats available regularly, the competition is fierce. To beat the competition, it's crucial to plan and give yourself the best chance to succeed. It is possible to select from 27 options for UPSC Civil Services Mains Examination. Whatever subject you choose will be relevant to both of the papers, each worth 250 denotes. Before choosing an optional subject, you should carefully consider both its advantages and disadvantages. Therefore, you should carefully examine the advantages and disadvantages of the subjects you have at the top of your priority list.