As You Are Driving Your Younger Brother to Basketball Practice

As you are driving your younger brother to basketball practice, he notices that the wheels of the truck in front of your car have thrown up a rock. Milliseconds after the rock hits the windshield your brother yells "incoming!" Later, the word "incoming" can elicit a _______ expectation that a rock will hit the windshield because of the phenomenon of _______.

A) very strong; delay conditioning
B) moderately strong; delay conditioning
C) weak; backward conditioning
D) weak or strong, depending on how loudly the word was yelled; simultaneous conditioning