Answer: Homeostasis
Explanation: Ryan has been served a large meal at a restaurant, but when he feels full, he stops eating. he asks for a box to take the remaining food home instead of overeating to the point of being uncomfortable. Ryan has achieved a state of Homeostasis with regard to his food consumption. Homeostatic is when eating has a response to a perceived energy need by the brain. So the brain thinks you need energy and it makes you hungry, it makes you more interested in food. So that can occur due to the activation of systems in the body. One of them is a short-term system, the satiety system.
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