Which stream should I opt for civil services as an optional subject in Mains?

Dear aspirant, Apart from the General Studies, a considerable majority of the subjects from the stream of Arts are also included in the list for the Optional Subjects that UPSC allows to choose from. The subjects listed below, offered by the stream of Humanities are also allowed to be opted for the

List of optional subjects for CSAT: Agriculture Animal Husbandry & Veterinary Science Anthropology Botany Chemistry Civil Engineering Commerce and Accountancy Economics Electrical Engineering Geography Geology History Law Management Mathematics Mechanical Engineering Medical Science Philosophy Phys