June 2007 PrepTest, Section 2, Question 5
By Brandon Beaver | Published October 29, 2024
Type: Weaken
Difficulty:
Explanations
The simplest weakeners will say, “this has no effect” or “that’s not what has happened.” So, maybe something like, “the outward flow of heat from the planet has always been blocked” or “the outward flow of heat being blocked has no effect.”
A
Nope. Industrial pollution isn’t being accused of anything here.
B
Yup, that would undermine the scientist’s explanation. Why would minor gases be the issue if the bulk of them only started after the bulk of the warming?
C
No. We know the warming is primarily from gas buildup. Don’t go the step too far and assume this nominal amount of radiation in just some years would provide an alternative explanation.
D
No way. Like with C, we’d have to assume that those are the real causes, which we just can’t assume.
E
Nope. This would strengthen the scientist’s explanation.
Passage
Scientist: Earth's average annual temperature has increased
Question 5
Which one of the following, if true, would count as evidence