Hello!

You can choose any department of your choice to become a civil servant. It depends on your interest. It is always better to choose the subjects that you are interested in so that you can perform well in the civil services examination. If you choose a subject just because you heard someone say it is scoring without really liking the subject, then you won't be able to perform well in the examination. I would suggest you to choose a department based on your liking and comfort.

Hope this information will be helpful. Thank you.