Answer:
The answer is A. <em><u>Amino Acids</u></em>
Explanation:
<em>I did my research and I would suppose that this is about right. Correct me if I am incorrect and have a good one!</em>
<h2>
≧◉ᴥ◉≦</h2>
1. Lung capacity is basically how much air (in volumes) your lungs can hold.
2. I think that a swimmer would be able to have the biggest lung capacity because when swimming, you are mostly underwater with no air, so being able to hold as much air in as you can when you come up to take a breathe will help improve how well you do.
I would say D.....................
