Asubstantial 500-calorie breakfast will
a. cause sluggishness and fatigue during the late morning.
b. blow your diet and make you hungrier all day long.
c. not satisfy a hungry athlete.
d. increase performance and control appetite.

The answer would be : D. increase performance and help control appetite

A substantial breakfast consist of healthy amount of Carbs, fat, and protein will increase your focus for your activities throughout the day. And 500 calorie is an Acceptable amount assuming that your you need about 2000 daily caloric intake to sustain your weight