sushi600
According to
MGMAT there is an exception rule for find the assumption questions:
For Find the Assumption questions, the right answer is necessary to the conclusion. Generally, you will not see a lot of new language or new ideas different from what was in the argument: There is one exception though, assumptions that exclude another possibility."
I don't quite understand this rule. Does this mean that new language or new ideas only get introduced when there is another possibility that is not mentioned in the text?
sushi600 GMAT arguments often describe some surprising phenomenon and claim one particular possible explanation as THE explanation for that phenomenon. When making such a claim, they are assuming that no other possible explanations are available.
For example: Every morning when I wake up and open my eyes, I see that the sun is rising. Therefore, my awakening
must be causing the sun to rise.
Indeed, one possible explanation for the surprising correlation between my awakening and the sunrise is that my awakening causes the sun to rise. But, that's not the only possible explanation. Another possible explanation is that my wife programmed our virtual assistant (Nest Home, Amazon Echo, Siri, etc.) to ring each day when the sun rises, and that ring wakes me up.
So, by claiming that my awakening causes the sun to rise, I'm making many assumptions, one of which is that my wife
didn't program our virtual assistant thusly.
Test takers might be tempted to eliminate an answer choice about what my wife may or may not have done with a virtual assistant, as it seems to have nothing to do with the argument. Nevertheless, that answer would be correct! That's the exception that
MGMAT refers to.