In Pavlov's studies of classical conditioning of a dog's salivary responses,spontaneous recovery occurred

A) during acquisition,when the NS was first paired with the US.
B) during extinction,when the CS was first presented by itself.
C) when the CS was reintroduced following extinction of the CR and a rest period.
D) during discrimination training,when several conditioned stimuli were introduced.

Spontaneous Recovery

The reappearance of a previously extinguished conditioned response after a pause, without the need for further conditioning.

Classical Conditioning

A method of learning where, through continuous pairing, a reaction initially induced by a second stimulus comes to be provoked by the first stimulus instead.

Extinction

In psychology, the gradual weakening and disappearance of a conditioned response when the conditioned stimulus is repeatedly presented without the unconditioned stimulus.