After Hatching, a Graylag Goose Follows the First Moving Object

Multiple Choice

After hatching, a graylag goose follows the first moving object it sees, for example, a person. Later, at sexual maturity, the goose shows no interest in conspecifics (other graylag geese) . This case would be an example of:

A) instinct
B) social learning
C) imprinting
D) reward