Under What Circumstances Do We See Spontaneous Recovery of a Learned

Multiple Choice

Under what circumstances do we see spontaneous recovery of a learned response?

A) An individual is reinforced for responding to one stimulus but not to another.
B) A distracting stimulus increases a weakly learned response.
C) After a response is extinguished, the subject is given a delay and then tested again.
D) The subject is exposed many times to the CS alone.