Eduardo's Mother Always Wore Chantille Perfume, and When She Would

Multiple Choice

Eduardo's mother always wore Chantille perfume, and when she would hug him or hold him close he could smell that scent. Today, whenever he catches a whiff of Chantille perfume, it makes him feel calm and relaxed. The learning process that could best account for Eduardo's response to the scent of Chantille perfume is

A) operant conditioning.
B) observational learning.
C) classical conditioning.
D) delayed reinforcement.