What Does Health Really Mean?

Health is a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity.

Or in other words

a person's mental or physical condition.
"bad health forced him to retire"

the state of being free from illness or injury.
"he was restored to health"

used to express friendly feelings toward one's companions before drinking.
exclamation: your good health; noun: your health; plural noun: your healths; exclamation: your health

Its simple its a because they are more fat

The answer is d because , safety almost always works, to prevent stds and pregnancy