Answer:
Habituation
Step-by-step explanation:
Habituation is a psychological learning mechanism where the reaction to a stimulus is reduced after prolonged exposure to it. This definition states that because of repeated exposure to it, a person can learn to ignore a stimulus.
Habituation isn't the case here, because Jerome was still able to recognize Steel’s Pizza House sign, and even this makes his mouth start to water, this shows he hasn't developed any habituation, because he still responded to the stimulus.