While Trying to Learn What a "Doggie" Is, Little Johnny

Multiple Choice

While trying to learn what a "doggie" is, little Johnny looks at every animal he sees and compares it to his new puppy. If the animal is similar enough to his own puppy, then he decides it also is a puppy. Johnny's puppy serves as a _______________ for dogs.

A) proposition
B) heuristic
C) concept
D) prototype