Which of the Following Can Be Concluded from Harry Harlow's

Multiple Choice

Which of the following can be concluded from Harry Harlow's research with rhesus monkeys?

A) Harlow demonstrated that food was the only factor involved in creating attachment between rhesus monkeys and the surrogate "mothers."
B) The monkeys clearly preferred the cloth "mother" as evidenced by clinging behavior to the cloth "mother" in new situations.
C) The monkeys had no real preference for either "mother"; they typically sat in a corner and rocked or sucked their thumbs.
D) Harlow demonstrated that contact comfort had little to do with attachment of rhesus monkeys to the surrogate "mothers."