Answer:
Either B. or D.
Explanation:
I don't know for sure, these two answers just seem better than the others.
It would be placer because you are not digging up any ground..if that is not right it might be none because if you are messing with water environments you are still messing with it which could not be good
Answer
Your lower intestine of your body
The answer is C. He eats plenty of food that contain beta-carotene
