Hello,

Amidst the list of optional subjects you can choose medical science as this subject would be more closely related to your field of study, in case you don't want to opt for this some of the important factors to keep in mind is your interest which is extremely important as there will be two optional papers, and it's syllabus is equivalent to graduation studies, hence it's of utmost importance that if you choose a subject outside your graduation subject you like reading the subject, another important thing is look out for availability of study materials, don't go by which is the most scoring subjects because there is no such thing like that because what interests one person may not be interesting to another person, what you can do is go through the entire list of optional subjects, and choose few ones, check out their syllabus, availability of study materials, you can go through previous year papers also, also if there are toppers who have succeeded in the specific optional subject, you can read about the same in more detailed manner, that will help you tremendously,