When you make questions you need to make sure you complete them '-'
*what difference?
If you fix it ill try to answer it.
Sexual reproduction cells. Or just sex cells
Common examples of this would be if you place your hand in extremely warm or cold water, and an immediate response of pulling out of the water or any fluid, is an example of this extreme response, other responses are what is done in everyday, like being thirsty or hungry etc.
These behaviours are shared by all organisms even the most simple ones.
The answer is D. I hope it helps