Let me try to explain this step by step;
Quote:
the southern summer is practically no hotter than the northern
This is the
conclusion/main point of the passage, where all the information is leading to.
Quote:
But while in the northern hemisphere the difference between the heat of midsummer and the cold of midwinter is somewhat lessened by the changing distance of the sun,
in the southern hemisphere this effect is intensified, because the earth comes to perihelion in the southern midsummer.
First Boldface is a claim/assertion -
This effect is intensified, then it goes ahead to tell us why its intensified. This "effect" is that the difference between summer and winter in temperature for the southern is lesser than that of the northern because its closer to the sun midsummer ... so we are thinking hey! this should make summer hotter in south since its closer to the sun (perihelion) right?
Quote:
However, on account of the swifter motion of the earth from October to March than from April to September,
the southern summer is shorter enough to compensate for the sun’s being nearerSecond boldface is another claim made by the author, basically saying (in other words) "even though the sun is nearer in southern mid-simmer , it's summer is shorter due to Earth's faster orbital speed during that period"....so this makes me think hmm, so while the earth is nearer the time is shorter hence north summer = south summer.
To be honest i did not like the word "qualified" in B, but it was the best answer.
Quote:
A. The first is an assertion made by the argument in support of a position; the second states that position
A is clearly wrong because the first is going the opposite direction and not supporting, the second is not the main point
Quote:
B. The first is a claim made by the argument; the second qualifies the claim by presenting another assertion
correct answer- the first is a claim. (note that is didn't say what the claim did but just that its a claim -which is true given what the passage says) The second is also a claim that gives more context and counterbalances the first claim (its not necessarily weakening the first one, but giving a contrary premise that says - hey, even though that is true, there is another factor we haven't considered.)
Quote:
C. The first is the summary of the argument’s position; the second provides evidence supporting that position
This is clearly wrong in both parts based on the above analysis of the arguments structure
Quote:
D. The first presents an example that is contrary to the argument’s position; the second adds another opposing example.
This was tempting but its wrong. They are both CLAIMS not examples, and the second does not add another opposing example, it somewhat opposes the first. (this was how i ruled it out)
Quote:
E. The first is a concession that the position the argument establishes is not absolute; the second provides an exception to the argument’s position
The first boldface is not a "concession" to an opposing view but a claim within the argument. An "exception to the argument’s position" would mean that the second boldface introduces a case where the argument’s conclusion doesn’t hold. But in this case, the second boldface explains why that conclusion holds by providing a compensating factor (shorter duration)- thus it
supports the conclusion.
Hope this helps