Don't get the question can someone explain it to me or answer it? ?

answer; /// i believe the name your looking for is called (plaque)or check good luck

stimulus is a change in the environment that causes an organism to react. the response is the reaction to the stimulus. some examples of stimuli for zebras are drought, to many predators, and bad feeding grounds such as dead grass or plants. zebras respond to stimuli just like all other living organisms

c is the correct answer!