(Question in picture) also the subject is not geography

The first and the last question are the most relevant to the graph it’s self. The first question talks about the numbers dropping which would help clarify. The last one would help clarify what is producing these numbers. The second and fourth one are irrelevant to the graph. The third would also not be correct just because we don’t have enough information. I hope that helps!

Answertaurus is the highest in the sky;