a, because exercise doesn't just aid the prevention of certain diseases, it helps prevent many diseases. i would've chosen d if it wasn't so specific but a is the correct answer.
Im thinking simple carbohydrates.
1. protein
2. essential amino acids
3. complete proteins
4. incomplete proteins
Answer:
Ephraim McDowell (November 11, 1771 – June 25, 1830)
Explanation:
