The selection of your subject strictly depends on your board and school. You will have to take core subjects and secondary subjects for your 12th. Make sure you go through your board prospects and rules for the subject choices you are allowed to make.

hello, it depends on the board, like cbse strictly allows only 5 subjects but maharashtra board allows more subjects. secondly it depends on your school as well, if your school provides those subjects. Go through your board specifications and also what subject your school has and accordingly choose. ALL THE VERY BEST!