the lower bound of "most" in the first sentence = 50% but the upper bound is "all" or 100% so we cannot conclude that at least one student that received a higher grade missed a class because we have no way of knowing whether that most means 50% or if it means all. if it was clear it meant only half then yes you would be right, D is correct, but because we don't know the exact number we have to assume it could be 100% of students did not miss a session.

i give up

A and E feel equally presumptuous...why is A more supported than E?

do i have to read every answer and the whole stimulus for these questions? once i see the conclusion i just find it in the answers without reading the whole stimulus or all the answers for timing reasons #help

for 11.1 are arguments then only assessed based on the author's takes? so if the author is describing a hypothesis and conclusion of a scientist that is not actually an argument because it is not the author saying I agree with the scientists? Is that the main reason it is not an argument? Because there is no author voice?