You Classically Condition Your Dog Milo to Salivate When Middle

Multiple Choice

You classically condition your dog Milo to salivate when middle C is played on the piano,but you find that he also salivates when middle C is played on the guitar.You make a point of playing C on the guitar and not giving Milo any food afterward,whereas you do sometimes give him food after you play C on the piano.After a few days,Milo stops salivating when C is played on the guitar but continues to salivate when it is played on the piano.This phenomenon is known as:

A) extinction.
B) stimulus discrimination.
C) higher-order conditioning.
D) instinctive drift.