You train your dog Milo to salivate to the sound of a bell. Then you ring the bell every five minutes and don't follow the ringing with food for Milo. He salivates less and less and finally stops salivating at all when the bell rings

But the next morning, when you ring the bell, Milo salivates! What term is used to explain the reappearance of this response?
A) latent learning
B) spontaneous recovery
C) extinction
D) stimulus generalization

Answer: B
Rationale: Spontaneous recovery is the reoccurrence of a previously extinguished conditioned response, typically after some time has passed since extinction.