When Köhler Put Chimpanzees in Situations in Which Tempting Bananas

Multiple Choice

When Köhler put chimpanzees in situations in which tempting bananas were just out of reach, he found that:

A) many of the apes showed humanlike emotions and advanced cognitive abilities.
B) almost all of the apes figured out a way to reach the bananas.
C) apes often sat quietly for a while and then seemed to have sudden insight into a solution.
D) the apes performed impressive gymnastic manoeuvres to get the bananas but did not use tools.