Answer:
It is quite simple.
Lets start from the markings above the topic "external temperature."
3 lines after 20 C is 23 C. As you can see, both of them (animal 1 and animal 2 wave drawing on the graph) meet at that point. So thats why Option D is correct
Waste and extra fluids from the body.
I would need more info to clarify, but I would believe this is an conclusion considering it's apart of the science project, which I assume is done.
