Final answer:
The glucostatic hypothesis does not explain the set-point theory of hunger and eating.
Step-by-step explanation:
The statement that is not true about hunger and feeding behavior is c. The glucostatic hypothesis explains the set-point theory of hunger and eating.
Ghrelin is a hormone that stimulates appetite, and leptin is a hormone that signals satiety, so statements a and d are true. The hypothalamus plays a key role in regulating hunger, so statement b is true. However, the glucostatic hypothesis does not explain the set-point theory of hunger and eating, making statement c not true.