Answer:
B. You may need to take additional courses during a summer semester
Explanation:
(I think there was a typo in the question so I fixed it.)
When you change your major, you don't have to start all over. There are credit courses that transfer to different majors. Of course you will still have to take the required classes for the new major but in no way does this mean you have to start from day one.
Sports has nothing to do with majors and neither does dorming.
Hope this helped!