31 - Fiber is NOT one of the main nutrients.
32 - Elderly people are more at risk for foodborne illnesses because their immune systems have weakened with age.
33 - Reheating leftover food unproperly can lead to foodborne illnesses because the temperature has reach a certain amount of degrees again before it should be eaten.
If you can exercise without fatigue you are fit and healthy :)
The answer is B
explanation: ..
