Matthew Once Had a Teacher Who Punished Him Severely Whenever

Multiple Choice

Matthew once had a teacher who punished him severely whenever he did poorly on a mathematics test.Now he refuses to open a math book, saying that he is "too scared" to do so.He has learned to associate mathematics with the pain of punishment.Here, the painful punishment is a(n) :

A) unconditioned stimulus.
B) unconditioned response.
C) conditioned stimulus.
D) conditioned response.