The possible long-term health risks to airline personnel who

Question

The possible long-term health risks to airline personnel  who repeatedly cross multiple time zones has been a concern since the first jet transports went  into service in the 1950s.

A) who repeatedly cross multiple time zones has been a concern since the first jet transports went
B) who are repeatedly crossing multiple time zones has been a concern since the first jet transports that went
C) who repeatedly cross multiple time zones have been a concern since the first jet transports went 
D) repeatedly crossing multiple time zones has been a concern since the first jet transports went
E) repeatedly crossing multiple timezones have been a concern since the first jet transports going

piyatiwari · Answer

I choose D.

Step 1. Subject verb agreement. Here subject is 'health risks' which is plural. So plural verb.
 So look for ans choices with 'have been'
 So A, B and D are out

Step 2. In C, 'who are repeatedly cross' is wrong. So D is correct.

aalba005 · Answer

aa.. missed the plural of has vs. have .. D definitely looks good.

hfbamafan · Answer

Transposing has not been good for me had to retype answer C because I confused the part.

I will give time to answer and post OA. I am so SORRY!

BrushMyQuant · Answer

whats the OA?

Please share the OA so that we know the answewr. Also, lets discuss it out more?

ziko · Answer

C is the answer. Since risks - plural we need to use  have been a concern . the only answer choices are c and e, but in e the last underlined word  going  is wrong, so i am going with C

JubtaGubar · Answer

I choosed C.
It is correct in "have" and uses cross in present simple (usual action).

hfbamafan · Answer

Sorry I thought I put an OA in earlier.

OA: C

alchemist009 · Answer

i am confused of using "since" here. as far i know since is used in present perfect tense. but here since is used in past tense. am i missing something?? please help

GODSPEED · Answer

S-V agreement issue, "risks" will take "have"

A,B & D eliminated
C vs. E
E: "...jet transports going" awkward & wrong structure.  So. C be it!

thevenus · Answer

Meaning;- 
The statement is dealing about the  "risks" associated with an airline personal(in specific) so it is using "airline personal"not" airline personals" .
"Risks" has got its conjugate verb agreement with  "have been" ,not "has been"so (B) & (D) are out.
(E) is wrong because adverbial modifier "repeatedly"is modifying the verb "crossing" which is not needed (because repeatedly will change the meaning which will say that "its a normal process-often/usual"  AND  if it was usual/often then we should have used "airline personals"(in general)not "airline personal" (specifically) BUT  what is needed is a "who"which can refer to "airline personal"  ALSO  "went" is preferred over going to stay streamlined to the tense structure.

vivekdixit07 · Answer

Hi,
I think its C.

Who Repeatedly cross - Must use Present Simple as we are talking about a condition.
"Health Risks" should take "Have"

alwaysudit · Answer

This question is from the GMAT prep question pack 1 and here is what the official answer to why "B" is wrong
" The final Clause in the sentence  That went into service  does not provide a verb to complete the subordinate clause that begins with the words  since the first jet transports 
can this problem be rectified if we delete "that" from  since the first jet transports that went  .In this case will  when  serve as the verb of the subordinate clause

EducationAisle · Answer

Where is  when  used? Also,  when  is not a verb. If you remove  that , the subordinate clause in B would be exactly the same as the the subordinate clause in the correct option C (and it would be correct).

However, this issue (The final Clause in the sentence  That went into service  does not provide a verb to complete the subordinate clause that begins with the words  since the first jet transports ) is actually very subtle.

Perhaps easier way to eliminate B is the incorrect usage of "present continuous" ("are reading") and the subject-verb disagreement ("has").

alwaysudit · Answer

Thankyou again Ashish, and sorry for the typing error. What I was trying to say here is- can  went  serve as the verb for the subordinate clause beginning with  since

EducationAisle · Answer

Yes absolutely it would be a verb. In fact,  went  can only be a verb  always , since its  past participle  is  gone .

This is, as opposed to most other verb forms in English, where there might be some confusion, since for most verb forms, their  simple past  and  past participle  is the same (for example, the verb  interest  has both  simple past  and  past participle  as  interested ).

JarvisR · Answer

The possible long-term  health risks  
to airline personnel 
 who repeatedly cross multiple time zones 
 has been  a concern since 
the first jet transports went  into service in the 1950s.

A)who repeatedly cross multiple time zones  has been a concern  since the first jet transports went
B)who are repeatedly crossing multiple time zones  has been a concern  since the first jet transports that went
 C)who repeatedly cross multiple time zones have been a concern since the first jet transports went. 
 D)repeatedly crossing multiple time zones  has been a concern  since the first jet transports went
E) repeatedly crossing  multiple time zones have been a concern since the first jet  transports going 
>>What r the errors in E?
Using crossing -a participle(Adj) with repeatedly- a adverb
or usage of present participle going with jet for a past event..
Request the members to share their inputs.

Also feel free to add if u see any other issues in the options.

nayanparikh · Answer

The correct answer here is C. The phrase "possible long-term health risks" is plural and have is the correct tense that is used in the answer C above.

mihir0710 · Answer

The possible long-term health risks to airline personnel  who repeatedly cross multiple time zones has been a concern since the first jet transports went  into service in the 1950s.
 
Subject is "risks" (plural) so a plural verb is required. and "has been" is singular..
So option A, B and D are out

A)who repeatedly cross multiple time zones has been a concern since the first jet transports went
B)who are repeatedly crossing multiple time zones has been a concern since the first jet transports that went
C)who repeatedly cross multiple time zones have been a concern since the first jet transports went. 
 Correct

D)repeatedly crossing multiple time zones has been a concern since the first jet transports went
E)repeatedly crossing multiple timezones have been a concern since the first jet transports going
 The subordinate clause "since the first .." does NOT have a verb ("going" is not a verb)

mbsingh · Answer

mikemcgarry  ,  GMATNinja  ,  souvik101990

Why isn't E the right answer ? I picked C because E sounds wrong but like experts say don't go by the way a sentence sounds in GMAT.
Looking for more clarity on that. Thanks

The possible long-term health risks to airline personnel who

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GMAT Sentence Correction (SC - EA only) Questions

The possible long-term health risks to airline personnel who

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