Criteria to Select Optional Subjects

One should consider few things before actually jumping on to pick a subject in Civil Services Exam. Some of these criterion includeFirst, the current trend of marks in the particular subject.Second, Availability of material and coaching. For instance, in Hindi there less books available for Public Administration than in English. One may choose some literature subject, but it should be ensure that whether a quality coaching is available or not, if need of coaching is felt.Thirdly, Inrterest in the subject should also be a criteria as it ensures sustained effort to learn new things and add value to the answers.