When Gerbils Were Offered a Choice Between Foraging for Seeds

Multiple Choice

When gerbils were offered a choice between foraging for seeds in a safe plot or in a risky plot (one exposed to the simulated light of a full moon or one visited by a trained owl flying overhead) , they preferred the safe plot

A) as long as the number of seeds was the same in the two plots.
B) under all conditions.
C) when the risk involved the moonlight rather than the owl.
D) when the risk involved the owl rather than the moonlight.