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gloomybison
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Many afflictions once thought to be caused by environmental factors or 08 Jan 2022, 11:38
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5% (low)

Question Stats:

83% (00:56) correct 17% (01:29) wrong based on 83 sessions

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Many afflictions once thought to be caused by environmental factors or behavior are now believed to be genetic in origin.

A. now believed to be genetic in origin
B. now believed to have been genetic, originally
C. believed to be now genetic in origin
D. believed now that they have origins in genetics
E. believed now to have had origins in genetics
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A
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Many afflictions once thought to be caused by environmental factors or 11 Jan 2022, 03:03
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gloomybison
Many afflictions once thought to be caused by environmental factors or behavior are now believed to be genetic in origin.

A. now believed to be genetic in origin
B. now believed to have been genetic, originally
C. believed to be now genetic in origin
D. believed now that they have origins in genetics
E. believed now to have had origins in genetics
Show more

Explanation-
Sentence Structure-
Many afflictions once thought to be X are now believed to be Y

In the original sentence- There are no errors, parallelism is maintained (to be X......to be Y)

Answer Choice Analysis-
A. now believed to be genetic in origin - This is the correct answer as explained above
B. now believed to have been genetic, originally- Parallelism error (to be X......to have been Y)
C. believed to be now genetic in origin- 'now' is incorrectly modifying genetic, instead of 'believed'
D. believed now that they have origins in genetics- Parallelism error
E. believed now to have had origins in genetics- Parallelism error
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Many afflictions once thought to be caused by environmental factors or 27 Aug 2023, 04:28
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carcass yashikaaggarwal vv65 GMATNinja

I couldn't find any error in MEANING in option B. Is there any ? I don't see any error to use "believed to have been genetic, originally" as people believe (today) that the afflictions were genetic in origin. Perhaps, A is more concise than B ?
Please correct me if I am wrong.
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Many afflictions once thought to be caused by environmental factors or 27 Aug 2023, 05:13
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Shadyshades

I couldn't find any error in MEANING in option B. Is there any ? I don't see any error to use "believed to have been genetic, originally" as people believe (today) that the afflictions were genetic in origin. Perhaps, A is more concise than B ?
Please correct me if I am wrong.
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We do not use the present perfect for states that could never be different.
So we do not say iron has been a metal or iron is believed to have been a metal. We can say iron is a metal or iron is believed to be a metal.

Similarly, it does not make sense to say that a disease has been genetic or that a disease is believed to have been genetic.
Because the quality of being genetic can never change. Any disease has either been genetic always or it has never been genetic.

We CAN say that a disease has been common or that a disease is believed to have been common.
Because that CAN change: perhaps the disease was common in the past, or perhaps the disease has been common for many years now, or perhaps we believe that the disease was common at some points in history.

Hope this makes sense?

Posted from my mobile device
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Many afflictions once thought to be caused by environmental factors or 27 Aug 2023, 08:12
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Shadyshades
carcass yashikaaggarwal vv65 GMATNinja

I couldn't find any error in MEANING in option B. Is there any ? I don't see any error to use "believed to have been genetic, originally" as people believe (today) that the afflictions were genetic in origin. Perhaps, A is more concise than B ?
Please correct me if I am wrong.
Show more
You can solve it using parallelism too.

to be X in non-underlined sentence needs to put parallel to be Y in underlined.
B doesn't have that.
You can eliminate B like that.

Posted from my mobile device
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