Different Groups of Vervet Monkeys Learned to Prefer Either Blue

Multiple Choice

Different groups of vervet monkeys learned to prefer either blue or pink corn.All but one of their 27 infant monkeys subsequently came to prefer the same color corn preferred by the adult monkeys in their group.This subsequent outcome best illustrated

A) operant conditioning.
B) instinctive drift.
C) observational learning.
D) extrinsic motivation.