What Did Harry Harlow Demonstrate in His Classic Study of Attachment

Multiple Choice

What did Harry Harlow demonstrate in his classic study of attachment amongst baby monkeys?

A) The monkeys were more attached to the artificial mothers that gave milk.
B) The monkeys were more attached to the artificial mothers that were warm and soft.
C) The monkeys displayed no preference for either cloth or wire artificial mothers.
D) The monkeys unexpectedly preferred wire artificial mothers over cloth ones.