I dont think you are putting yourself in the best position to approach the answer choices if you do not understand the scenario- especially so for weaken and strengthen questions. I think your first focus should always be on understanding the passage. I would recommend office hours to see how various tutors deconstruct tough scenarios like these, because that really is an essential skill to do well on LR. As of now, I would want you to focus on reading slowly, carefully, and with a primary goal of understanding what you read.