This asks to weaken the geologist's argument. I cannot wrap my head around why D is the correct answer. Someone please help!
https://7sage.com/lsat_explanations/lsat-74-section-1-question-23/
I have started my senior undergrad year, and can only study around 10 hours per week instead of 20-30 that I was in the summer. My PT score has decreased over the last few tests! Is it because of the decreased time spent on studying??