How do you do this thing that i have to do that is this

C

Explanation:

You do this thing that is this that you have to do by doing that thing with the things so you get a thing. Got it?

your answer is "the 1950's"

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