You do know that you have to give a topic on what this project is about, also doing this quick is never gonna happen. Science projects take TIME AND EFFORT. So, with that being said, sorry for wasting your time.
The answer is D. Supplying oxygenated blood to the arteries that travel to all major body parts.
Its definitely not A or D because there are 26 weeks in 6 months.
generally, a weight loss of 1-2 lbs per week is reasonable and safe.
I would say B because it is unrealistic that someone would always lose 2lbs a week