Answer:
I think, if this is the assignment in Life Skills I am thinking of, that the best choice would be B) your choice of friends.
Explanation: I don't think any of the others are really within your control. Your family's history is your history, no matter what. Same as your family's culture and your ethnic group. Hence, I believe the only valid and reasonable choice would be B) your choice of friends, since you can and have the right to choose who you want to be around as friends.