Final answer:
The duck following Kay around is an example of imprinting, a type of learning where the duck recognizes the first adult they see as their mother and bonds with them.
Step-by-step explanation:
The duck following Kay around is an example of imprinting. Imprinting is a type of learning that occurs at a particular age or life stage. Hatchling ducks recognize the first adult they see, their mother, and make a bond with her. If a newborn duck sees a human before their mother, they will imprint on the human and follow them in the same manner as they would follow their real mother.