For me it was easier to find the right answer as opposed to eliminate bad ones. There are two reasons and ONLY two reasons why the author believes students with scholarships have higher GPA's than students who do not have scholarships. Those two reasons for higher GPA are not having to worry about finances (1) alleviates the stress related to financial concerns and (2)frees up students' time to study more.
That's it. No other reason. If this strikes you as odd, then that's good because the author did forget a couple other things that could affect GPA.
Because this is an assumption question, we can try the negate method. Negate each answer and see which one weakens the authors argument. Make sure you weaken the conclusion first and foremost.
A.) Students who take out loans
DO NOT maintain higher GPA's than those who work to finance school.
B. High GPAs were
THE ONLY criterion upon which the scholarship awards were based.
C. Finance-related stress affects student performance in a manner
NOT similar to that of restricted study time.
D. Students who must work to pay for their studies
CAN maintain high GPAs.
E. Controlling stress level is
MOST important to student performance than is intensive studying.
When using this method if some of the answers do nothing to argument, you can cross them out. Some will even strengthen the argument. When you look at C now, it doesn't weaken or strengthen the argument. B should jump out to you, because if B were true those students would be able to get high GPA's regardless of their financial situation. Hope that helps.
Let me know if there is any flaw in my reasoning.