What you weigh isn't as important as the proportion of your body that's composed of fat because
a. weight doesn't matter when discussing overall health.
b. fat gives your body energy to function, while muscle mass is used only to perform strenuous activity.
c. a body that's comprised of more muscle mass will weigh more but is actually healthier than a body that's composed of more fat.
d. the more fat you have the more protected your body is.

The answer is C.) a body that's comprised of more muscle mass will weight more but is actually healthier than a body that's composed of more fat. 

But when in doubt, always eat a pineapple. 

The answer is B: fat gives your body energy to function, while muscle mass is used only to perform strenuous activity. This option is only correct because the statement includes the words, "muscle mass." If it was only "muscle," then it would be wrong. 

The answer cannot be A because weight should definitely be considered when discussing overall health.

The answer cannot be C because muscle weighs less than fat, but it is healthier.

The answer is not D because body protection does not occur from the amount of fat a person has. 

Nail fungus, which can cause the nails to crack, peel and change color and texture.