Which of the following statements about hunger and appetite is true?
a) an appetite will cue the body to start eating using attention-grabbing symptoms like a growling stomach, irritability, or tiredness.
b) hunger is a physical response in the body; appetite is the state of no longer being hungry.
c) hunger is a desire to eat; appetite is a physical response in the body.
d) hunger is a physical response in the body; appetite is a desire to eat.