Since there is no survival value in an animal's having an organ that is able to function when all its other organs ha...

I understand the other, questions but I do no understand how we got the answer for practice question 2. Is it best to think about it like this: The goal of main point is to find the point (conclusion) than indicate supporting evidence (premise). The way I go about it is which sentence in the passage needs justification or supporting evidence? I use the answer choices to help (IDK). "Research efforts are justified" option requires us to ask why research efforts are justified? after asking that question. Find evidence (premise). what supports that point? 1. The fact that it is technologically possible for humankind to alter climate (explains why research efforts are justified.) 2. It would take time like anything else (cathedrals and temple) 3.The research would be good to understand the Earths Climate. Making that your conclusion and everything else (supporting evidence) a premise. Idk if that helps but it helped me, and I am struggling to understand.