Answer:
B. generalization
Explanation:
The scenario described, where Joseph is afraid of not only moving cars but also moving trucks, motorcycles, and bicycles, is an example of:
B. generalization
Generalization occurs when a response learned in one situation is elicited in another similar situation. In this case, Joseph's fear of moving vehicles has generalized from one type of vehicle (cars) to other similar types of vehicles (trucks, motorcycles, and bicycles).