Answer:
C I think I am not so sure so
Well I would say do an event that is most signifigant to you. It could be a Tragic or Happy memory, or one that is simply close to your heart.
Answer: Cardiovascular Endurance Training.
You should turn it into an assertion because then with your essay or whatever you're using to back it up, you can affirm that your thesis statement is true/correct or w/e