The excretory system is most likely to respond when an animal is thirsty in this way: B. by retaining body fluids.
Because the body doesn't get enough fluids to not be thirsty anymore, it retains whatever fluids it already has in it until the thirst is satiated.
The two substances needed in this situation are:
potato extract and catechol<span />
Answer: corpus luteum secretion
Explanation:
