Question 1
Soham68 wrote:
I have a question related question#1 - question stem says
The passage suggests that, in the early 1990s, Michaels would have been most likely to agree with which of the following statements about the disparity mentioned in lines 3-4?
In passage, it was not mentioned when Michaels started doubted his idea. So, what will be the scope of this question?
Should the scope of the answer is before Michaels started doubting his idea, or it can go beyond that?
Also, why option A is incorrect in question#1
Take a look at the relevant section of the passage:
"In the early 1990s, Pat Michaels sought to explain this disparity, suggesting that sulfate emissions in industrial areas had a cooling effect, thus temporarily retarding global warming. Michaels later came to doubt this idea..."
From this, we know that Michaels made a certain suggestion in the early 1990s. Then we learn that he
"later" came to doubt this idea. This means that Michaels doubts occurred
after the 1990s. So, to answer question 1, we're looking for an option that corresponds to Michaels' initial suggestion in the early 1990s.
Would the early 1990s Michaels agree with (A) for question 1?
Quote:
A. This disparity is relatively less extreme in the Northern Hemisphere because of sulfate cooling.
The passage discusses a disparity between global warming models and actual climate data. The actual data showed that the world wasn't warming up as fast as the models predicted.
In the early 1990s, Michaels explained this disparity by saying that sulfate emissions temporarily slow down warming. What did the early-90s Michaels think about cooling in the northern vs southern hemisphere? We have no idea -- the issue with the hemispheres isn't discussed until we learn about his "later" doubts.
This "later" Michaels points out that the
south actually had slower warming than the north, which is directly contrary to what (A) tells us. We really can't conclude from this that the early-90s Michaels would agree with the information in (A) -- it could be that he hadn't considered hemispheres at all in the early 1990s.
(A) is out.
Compare that to (B):
Quote:
B. This disparity is only a short-term phenomenon brought about by sulfate cooling.
The early-90s Michaels believed that sulfate emissions
"temporarily" slowed down warming. So, he would agree that the disparity was a short-term issue caused by sulfate emissions.
(A) is the correct answer to question 1.
I hope that helps!