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HIV virus – the virus that causes AIDS – does not seem to transmit eas

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Experts' Global Representative
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Joined: 10 Jul 2017
Posts: 1601
Location: India
GMAT Date: 11-01-2019
Re: HIV virus – the virus that causes AIDS – does not seem to transmit eas  [#permalink]

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New post 17 Jan 2020, 05:25
Dear Friends,

Here is a detailed explanation to this question-

gauravraos wrote:
HIV virus – the virus that causes AIDS – does not seem to transmit easily from person to person, though in China it has infected the family members and health care personnel taking care of them.

A. it has infected the family members and health care personnel taking care of them
B. it has infected the family members and health care personnel who had taken care of them
C. the virus has infected the family members and health care personnel who have taken care of them
D. the virus had infected the family members and health care personnel who took care of victims
E. it has infected the family members and health care personnel taking care of victims


Choice A: In Option A, we see a case of pronoun ambiguity as the pronoun "them" has no antecedent. Thus, Option A is incorrect.

Choice B: Option B suffers from the same pronoun ambiguity that Option A. Moreover, this option incorrectly employs the past perfect tense in the verb phrase "had taken". Thus, Option B is incorrect.

Choice C: Option C suffers from the same pronoun ambiguity that Options A and B do. Thus, Option C is incorrect.

Choice D: Option D incorrectly employs the past perfect tense in the verb phrase "had taken". Additionally, its use of "the virus" is somewhat redundant as the pronoun "it" serves a perfectly valid replacement. Thus, Option D is incorrect.

Choice E: Option E avoids pronoun ambiguity, maintains proper tense usage, through the verb phrase "taking care", and is quite concise. Thus, Option E is correct.

Hence, E is the best answer choice.

It should be noted here that "taking care", the present continuous tense, is the correct verb form to use in this context as the meaning of the sentence is that the virus has infected those currently engaged in providing care to HIV victims. The past perfect form of the verb is incorrect, here, as there is no other event that took place before it.

To understand the concept of “Avoiding Pronoun Ambiguity on GMAT”, you may want to watch the following video (~1 minute):



To understand the concept of the “Past perfect tense and the use of Had” on GMAT, you may want to watch the following video (~2 minutes):



All the best!
Experts' Global Team
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Joined: 23 Nov 2018
Posts: 253
GMAT 1: 650 Q49 V28
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Re: HIV virus – the virus that causes AIDS – does not seem to transmit eas  [#permalink]

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New post 03 Feb 2020, 03:44
ExpertsGlobal5 wrote:
Dear Friends,

Here is a detailed explanation to this question-

gauravraos wrote:
HIV virus – the virus that causes AIDS – does not seem to transmit easily from person to person, though in China it has infected the family members and health care personnel taking care of them.

A. it has infected the family members and health care personnel taking care of them
B. it has infected the family members and health care personnel who had taken care of them
C. the virus has infected the family members and health care personnel who have taken care of them
D. the virus had infected the family members and health care personnel who took care of victims
E. it has infected the family members and health care personnel taking care of victims


Choice A: In Option A, we see a case of pronoun ambiguity as the pronoun "them" has no antecedent. Thus, Option A is incorrect.

Choice B: Option B suffers from the same pronoun ambiguity that Option A. Moreover, this option incorrectly employs the past perfect tense in the verb phrase "had taken". Thus, Option B is incorrect.

Choice C: Option C suffers from the same pronoun ambiguity that Options A and B do. Thus, Option C is incorrect.

Choice D: Option D incorrectly employs the past perfect tense in the verb phrase "had taken". Additionally, its use of "the virus" is somewhat redundant as the pronoun "it" serves a perfectly valid replacement. Thus, Option D is incorrect.

Choice E: Option E avoids pronoun ambiguity, maintains proper tense usage, through the verb phrase "taking care", and is quite concise. Thus, Option E is correct.

Hence, E is the best answer choice.

It should be noted here that "taking care", the present continuous tense, is the correct verb form to use in this context as the meaning of the sentence is that the virus has infected those currently engaged in providing care to HIV victims. The past perfect form of the verb is incorrect, here, as there is no other event that took place before it.

To understand the concept of “Avoiding Pronoun Ambiguity on GMAT”, you may want to watch the following video (~1 minute):



To understand the concept of the “Past perfect tense and the use of Had” on GMAT, you may want to watch the following video (~2 minutes):



All the best!
Experts' Global Team



Hi, Experts Global!

I have a question regarding this question

In option A doesn't "them" refer back to family members and health care personnel?

is there any rule that the pronoun cannot refer back to a compound noun?
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Re: HIV virus – the virus that causes AIDS – does not seem to transmit eas   [#permalink] 03 Feb 2020, 03:44

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