The main answer would be C, it could be a depending on how intense your workout is
I would say #2, because it is very important to eat a well balanced diet while also working out and staying physically active to stay healthy! However, the question asks, "Which of the following is a guideline for practicing good nutrition." That being said I would say #4 "Consume foods with a variety of nutrients and adequate portions.
Hope this helps!
-Will make you run faster.
-Will make you jump higher.
etc.
Answer:
The answer would be 4. just yourself
Explanation:
If you only have yourself for support then theres no system in place