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If industrial pollution continues to deplete the ozone layer, the resu

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If industrial pollution continues to deplete the ozone layer, the resu [#permalink] New post   18 Nov 2019, 05:17
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If industrial pollution continues to deplete the ozone layer, the resulting increase in ultraviolet radiation will endanger human health, causing a rise in the incidence of skin cancer and eye disease, and perhaps even threatening global ecological systems.

(A) and perhaps even threatening
(B) and may even threaten
(C) and even a possible threat to
(D) as well as possibly threatening
(E) as well as a possible threat to
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B
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Re: If industrial pollution continues to deplete the ozone layer, the resu [#permalink] New post   18 Nov 2019, 07:32
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If industrial pollution continues to deplete the ozone layer, the resulting increase in ultraviolet radiation will endanger human health, causing a rise in the incidence of skin cancer and eye disease, and perhaps even threatening global ecological systems.

As written "ultraviolet radiation will endanger human health, causing ... and perhaps even threatening ...", the sentence seems to present two HOW-aspects of the action "will endanger human health".
It is not correct as "causing a rise in the incidence of skin cancer and eye disease" definitely explains how UR causes bad things to human health, but "threatening global ecological systems" is not. This is an incident of forced parallelism, the second part does not explain the effect of UR of health rather completely different effect.

We need an answer choice that makes parallel another list: "will endanger" and "will threat".

Quote:
(A) and perhaps even threatening
- incorrect for the reason explained above
Quote:
(B) and may even threaten
- correct
Quote:
(C) and even a possible threat to
- "and" requires us to maintain parallelism: noun ("a possible threat") is not parallel to verb ("will endanger")
Quote:
(D) as well as possibly threatening
- same as A
Quote:
(E) as well as a possible threat to
- same as C
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Re: If industrial pollution continues to deplete the ozone layer, the resu [#permalink] New post   16 Mar 2020, 23:25
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Let’s simplify the sentence:
If pollution continues, the increase will endanger X, causing …, and [threaten] Y.
We can see that X and Y have to be parallel and the verb forms as well. Based on this we can eliminate the options:

(A) and perhaps even threatening – not parallel. Eliminate.
(B) and may even threaten – parallel. Best choice.
(C) and even a possible threat to – not parallel. Eliminate.
(D) as well as possibly threatening – not parallel. Eliminate.
(E) as well as a possible threat to – not parallel. Eliminate.

Hope this helps!
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If industrial pollution continues to deplete the ozone layer, the resu [#permalink] New post   27 Jul 2020, 15:37
Notice there is a comma before the underlined part!

That comma means that there are two cases:

1. we have an "and", then the underlined part cannot be parallel with "causing a rise" because "A, and B" pattern is wrong. Therefore, the underlined part must be parallel with "will endanger human health". (actually you can very easily approach this by thinking through the meaning, but I am talking in the scope of grammar)

2. we have an "as well as", then the underlined part must be parallel with "causing a rise" because it follows the format of "A , as well as B".

By the rules above, we can eliminate A, C, E because they are not parallel.

We are left with B and D. However, the meaning in D is illogical: the action of "endanger human health" cannot cause "threaten global ecological systems". Therefore, B correct.


Again, we should always approach SC questions through meaning. But here I am actually working in terms of grammar first just to show you guys the difference between "and" and "as well as".
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Re: If industrial pollution continues to deplete the ozone layer, the resu [#permalink] New post   23 Aug 2022, 19:38
(A) and perhaps even threatening Incorrect not parallel to the verb will endanger
(B) and may even threaten Correct
(C) and even a possible threat to Incorrect not parallel to the verb will endanger
(D) as well as possibly threatening Incorrect not parallel to the verb will endanger
(E) as well as a possible threat to Incorrect not parallel to the verb will endanger
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Re: If industrial pollution continues to deplete the ozone layer, the resu [#permalink] New post   28 Apr 2023, 17:38
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i do understand that there is parallelism error but why parallel with "will endanger"? he parallel statements are 1.causing a rise .....and 2.perhaps even threatning....
i thought causing and thretning are parallel? where am i going wrong..
?
also if parallel list starts with will endanger...how causing is correct? shouldnt it be "will cause"?
Can someone pls help..
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Re: If industrial pollution continues to deplete the ozone layer, the resu [#permalink]
28 Apr 2023, 17:38
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