Harry Harlow's Research with Macaque Monkeys Raised with Surrogate Mothers

Multiple Choice

Harry Harlow's research with macaque monkeys raised with surrogate mothers led him to conclude that

A) it was contact comfort that created the mother-infant attachment bond.
B) forming an attachment depends upon reduction of the hunger drive.
C) attachment was unique to the human mother-infant relationship.
D) attachment was related to the resolution of the Oedipal complex in the mother-infant relationship.