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AkashM
Referring to participant's condition in past tense does not make sense, because it would imply that the study was conducted on patients who had health conditions, but did not have those conditions during the study. Thus, such a statement would not support the scientist's conclusion.

Eliminate B, D and E because it uses 'had' to refer to the participant's cardiovascular condition.
Eliminate C because 'suffering with' is not the correct idiom.

A remains and is the correct answer. Logical antecedent for 'they' can be the scientists.


Shouldn't "it" be the correct pronoun as we are refering to the team?

I chose E because of that.
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A team of scientists at Rochester University examined the effect of a modified HIIT regimen – one minute of exercise at 90 percent of one’s maximum heart rate with one minute of recovery – on a group of middle-aged participants having cardiovascular disease, and they concluded that the benefits of HIIT may also extend to people who suffer from chronic health conditions.


A) middle-aged participants having cardiovascular disease, and they concluded that the benefits of HIIT may also extend to people who suffer from
'they' has incorrect SV agreement. 'they' should be 'it' since 'they' refers to team. out.

B) middle-aged participants who had cardiovascular disease, and it concluded that the benefits of HIIT may also extend to people that suffer with
'suffer with' is incorrect. I think this is an incorrect idiom. This should be 'suffer from'.

C) middle-aged participants having cardiovascular disease, concluding that the benefits of HIIT may also extend to people suffering with
Ambiguous use if 'concluding'. Not sure what / who is doing the concluding here. 'Suffer with' is incorrect here as well.

D) participants who were middle-aged and who had cardiovascular disease, and they concluded that the benefits of HIIT may also be extended to people who suffer from
Same reasoning as A. 'they' refers to team.

E) middle-aged participants who had cardiovascular disease, and it concluded that the benefits of HIIT may also extend to people suffering from
Correct SV agreement and correct idiom use.
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Shouldn't "it" be the correct pronoun as we are refering to the team?

I chose E because of that.

Yes, that was my initial thought. But then I got hooked on to the usage of 'had' and also, I felt that we could refer to the scientists rather than the team using 'they'.

Let's wait for generis to clear this up.

Cheers!
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A team of scientists at Rochester University examined the effect of a modified HIIT regimen – one minute of exercise at 90 percent of one’s maximum heart rate with one minute of recovery – on a group of middle-aged participants having cardiovascular disease, and they concluded that the benefits of HIIT may also extend to people who suffer from chronic health conditions.

A) middle-aged participants having cardiovascular disease, and they concluded that the benefits of HIIT may also extend to people who suffer from -> A team is singular, so we need "it". Incorrect.

B) middle-aged participants who had cardiovascular disease, and it concluded that the benefits of HIIT may also extend to people that suffer with -> Suffer with is used for "the way someone suffered". We have a disease followed, so suffer from is correct form. Incorrect.

C) middle-aged participants having cardiovascular disease, concluding that the benefits of HIIT may also extend to people suffering with -> suffering with is incorrect. And, it looks like middle-aged participants are concluding, which is not the intended meaning of the sentence.

D) participants who were middle-aged and who had cardiovascular disease, and they concluded that the benefits of HIIT may also be extended to people who suffer from -> why do we say, "participants who were middle-aged ". Further, "they" Subject verb agreement issue. Incorrect.

E) middle-aged participants who had cardiovascular disease, and it concluded that the benefits of HIIT may also extend to people suffering from -> suffering (-ing) modifier modifies people. It makes sense.

So, I think E. :)
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My answer is (E). It took me 02:17.

(A) "They" should be "it" to refer to "a team of scientists".

(B) "people that suffer" should be "people who suffer".
Anything wrong with "suffer with"? It is considered idiomatic usage.
Example from https://www.freecollocation.com/search?word=suffer: He suffers terribly with migraines.

(C) I spent quite some time comparing (C) and (E), but I never liked (C). As a reader, I dislike seeing "having cardiovascular disease", "concluding", and "suffering with" in rapid succession as if there were no other way to make the reading less boring.

But personal distaste does not carry much weight in GMAT SC, so I have to find fault with (C).

I believe that, by using "concluding that", the author fails to give some breathing room between ”conducting examination" and "drawing conclusion". It seems to indicate that a casual glance is all it took to make the conclusion. That is to say, the two actions (examine and conclude) occurs almost concurrently. That team of scientists at Rochester University should know better not to rush.

(D) See (A).

(E) While (E) is very decent, some may argue that the antecedent for "it" is ambiguous: it can mean "A team of scientists" or "a group of middle-aged participants".

According to Manhattan's SC book (in chapter "Pronouns & Verbs: Extra"), "if the pronoun points to the same noun both structurally and logically, then the sentence is probably acceptable, even if other possible antecedents exist. "

So (E) is acceptable.
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A team of scientists at Rochester University examined the effect of a modified HIIT regimen – one minute of exercise at 90 percent of one’s maximum heart rate with one minute of recovery – on a group of middle-aged participants having cardiovascular disease, and they concluded that the benefits of HIIT may also extend to people who suffer from chronic health conditions.


A) middle-aged participants having cardiovascular disease, and they concluded that the benefits of HIIT may also extend to people who suffer from Incorrect

having uses wrong; A team of scientists singular, they plural

B) middle-aged participants who had cardiovascular disease, and it concluded that the benefits of HIIT may also extend to people that suffer with Incorrect

........people suffering from better than .............people that suffer with;
suffer from correct idioms

C) middle-aged participants having cardiovascular disease, concluding that the benefits of HIIT may also extend to people suffering with Incorrect

suffer from correct idioms
having uses wrong

D) participants who were middle-aged and who had cardiovascular disease, and they concluded that the benefits of HIIT may also be extended to people who suffer from Incorrect

A team of scientists singular, they plural

E) middle-aged participants who had cardiovascular disease, and it concluded that the benefits of HIIT may also extend to people suffering from Correct
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The official explanation is here.
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i'm still confused why had over having?
had is used in double past cases but in this case there's only one action happening in past.
someone please elaborate.
thanks in advance
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When we are talking about a recurrent situation, something that happens repeatedly as a matter of course, we use the simple tense.

Also, as in this case, when we want to discuss general truths or factual information, we use the simple tense.

These people who were studied “had” cardiovascular disease as a general truth sometime in the past.

“Had” is not only used as a helping verb for the past perfect tense. “Had” is also the simple past tense of the verb “-to have.”

“I had a good time last night.”

“I had a fatal illness last year.”

“Had” is used in this sentence to indicate these research subjects had cardiovascular disease as a general truth at some point in the past while this study was taken. Since it is the simple past tense, they most likely no longer have cardiovascular disease.

If we say someone “had” cardiovascular disease, then we mean that person experienced the illness as a matter of course up until some point in the past when it ended.

“Having” can be used in two situations that might seem to apply to this sentence (neither situation applies however)

(1) when any “-ing” type verb (present participle) immediately follows a noun, it is being used to describe that noun.

“The person driving the Toyota narrowly missed an accident.”

In the above sentence, “driving the Toyota” describes the noun “person”

(2) an “-ing” verb such as “having” can follow a version of the helping verb “-to be” to form the present progressive verb tense. This verb tense is used to describe some action that is happening right now as we speak.

“The person in the Toyota is driving on the highway right now.”



Hopefully something is helpful?

Shivamraz
i'm still confused why had over having?
had is used in double past cases but in this case there's only one action happening in past.
someone please elaborate.
thanks in advance

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