Which of the Following Provides the Most Direct Evidence for the Existence

Which of the following provides the most direct evidence for the existence of cognitive maps in animals?

A) A rat takes the longer yet only the effective route out of a maze when his direct path is blocked.
B) A police dog locates a piece of luggage that contains illegal drugs.
C) A sea lion is able to retrieve a test missile that has been fired into the ocean.
D) A coyote develops an aversion to sheep after sheep meat has been paired with lithium chloride.