With Virtually No Hesitation, You Can Say That Pigs, Sheep

Multiple Choice

With virtually no hesitation, you can say that pigs, sheep, and cows are all examples of the concept of mammal, but you may hesitate a few seconds before deciding whether bats and porpoises are also mammals. This suggests that pigs, sheep, and cows are _____ of the concept mammal.

A) stereotypes
B) prototypes
C) algorithms
D) heuristics