Every day after class, jerome smells delicious pizza from steel’s pizza house on his walk home and his mouth starts to water. one day, jerome is riding the bus home from class and sees the steel’s pizza house sign, and even this makes his mouth start to water. jerome has most likely experienced all of the following except

habituation

Explanation:

                       Jerome is very fond of pizza and she loves to eat Pizza. On getting the smell of the pizza, Jerome's mouth start to water or salivates.

                       Every day, Jerome, after class while going home by walking starts watering his mouth when he gets the smell of his favorite delicious pizza Steel’s Pizza House.

                       His mouth also salivates when one day he rides the bus while going home from class after seeing the Steel’s Pizza House sign.

Thus it is obvious in his brain that Jerome's mouth starts to water when he gets the smell of the delicious pizza from Steel’s Pizza House or when he  sees the sign board of the Steel’s Pizza House.

Thus the answer is habituation.

i don't know im sorry.