Just Before a Duckling Was About to Hatch, a Dog

Multiple Choice

Just before a duckling was about to hatch, a dog came along and chased the female duck off of the nest. When the duckling hatched it saw the dog. When the dog moved away from the nest, the duckling followed the dog. This is an example of

A) ethology.
B) anthropomorphism.
C) imprinting.
D) a dumb duck.