Cholroplasts is one of them
The answer is D. Quaternary
Lactic acid begins to build up during some exercises, such as running and swimming.
Some people don't build up lactic acid nearly as much, such as <span>Dean Karnazes, who once ran 50 miles in 50 days, then ran the 1300 miles back to the start.</span>
A is the answer. I had this question earlier and went back to make sure and I got it right.