rnn wrote:
why is B wrong? if Car engines will be radically redesigned then then it will contribute to less emissions right?
We weren't asked which answer choice would lead to lower emissions.
Here's the question again:
Quote:
If under the circumstances described above cars continue to meet emission standards, which one of the following is the most strongly supported inference?
This is an inference question. Whatever answer choice we keep must be supported by the passage, and more strongly supported by the passage than every other answer choice.
Choice (B) describes an outcome where automakers radically redesign car engines to eliminate the need to clean electronic ignition sensors. While it's
possible that this could happen, there's nothing in the passage to suggest that automakers would take this specific, radical action.
To keep us grounded, let's refresh on what the author has written:
- Chloroflourocarbons (CFCs) are the best possible solvents for electronic sensors in modern auto ignition systems.
- CFCs have contributed significantly to automakers' ability to meet emission standards.
- Automakers must phase out use of CFCs AND meet more stringent emission standards.
- [And the question adds that] Cars will continue to meet emission standards.
Now let's look at the other answer choices:
Quote:
(A) As emission standards become more stringent, automakers will increasingly cooperate with each other in the area of emission control.
Just like choice (B), choice (A) presents a
possible outcome: Automakers will increasingly cooperate with each other. And just like with choice (B), there's nothing in the passage to support this inference. Eliminate (A).
Quote:
(C) There will be a marked shift toward smaller, lighter cars that will have less powerful engines but will use their fuel more efficiently.
Just like choices (A) and (B), choice (C) simply is not supported by anything the author has written in the passage, so we can eliminate it as well.
Quote:
(D) The solvents developed to replace chlorofluorocarbons in car engines will be only marginally less effective than the chlorofluorocarbons themselves.
Again, what in the passage suggests this outcome? Nothing. There is no information whatsoever about solvents developed to replace CFCs in car engines, so eliminate (D).
Quote:
(E) Something other than the cleansers for electronic ignition sensors will make a relatively greater contribution to meeting emission standards than at present.
Finally! This is the ONLY choice that reflects what the passage tells us about automakers and the requirements that they must satisfy.
According to the passage, as automakers phase out the use of CFCs, we should expect a significant decrease in their ability to meet emission standards.
Therefore, automakers will have to find some other way to improve their ability to meet emission standards, which are becoming more stringent. The passage does NOT reveal what that other way could be. It only describes the two simultaneous goals that automakers must achieve.
Unlike every other choice, (E) doesn't specify an action or an outcome that is totally absent from the passage itself. Instead, (E) directly follows the text, stating that
something other than cleansers (because CFCs, the best cleanser, have to be phased out)
will make a relatively greater contribution to meeting emission standards (because CFCs have contributed significantly to automakers' ability to meet those standards).
Choice (E) is a solid inference, while every other answer choice is a smart-sounding statement that is NOT supported by the passage.
I hope this helps!
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Updated on: 18 Feb 2020, 04:43
33%
(02:30)
wrong 
