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# Studies of the human sleep-wake cycle have practical

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Manager
Joined: 02 Jun 2011
Posts: 55
Studies of the human sleep-wake cycle have practical  [#permalink]

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11 Sep 2012, 06:59
1
00:00

Difficulty:

(N/A)

Question Stats:

94% (00:40) correct 6% (00:00) wrong based on 88 sessions

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Studies of the human “sleep-wake cycle” have practical relevance for matters ranging from duty assignments in nuclear submarines and air-traffic control towers to the staff of shifts in 24-hour factories.
(A) to the staff of
(B) to those who staff
(C) to the staffing of
(D) and staffing
(E) and the staff of
Manager
Joined: 27 Feb 2007
Posts: 59
Re: Studies of the human “sleep-wake cycle” have practical relev  [#permalink]

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11 Sep 2012, 07:17
This one is a straightforward case of lack of PARALLELISM.

The clause following FROM and the clause following TO must be parallel. Both the clauses should be about matters, and not about people - because the clauses are actually two examples of matters.

A. it's about people (staff). Incorrect
B. it's about people (those who staff). Incorrect
C. it's about matter (staffing). Correct
E. it's about people (staff). Incorrect
Manager
Joined: 24 Jul 2011
Posts: 66
Location: India
Concentration: Strategy, General Management
GMAT 1: 670 Q49 V33
WE: Asset Management (Manufacturing)
Re: Studies of the human “sleep-wake cycle” have practical relev  [#permalink]

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11 Sep 2012, 07:34
I'm also for C. "to the staffing of"

Other options are not correct.
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Joined: 01 Oct 2013
Posts: 3637
Re: Studies of the human sleep-wake cycle have practical  [#permalink]

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13 Dec 2017, 07:33
Hello from the GMAT Club VerbalBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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Re: Studies of the human sleep-wake cycle have practical   [#permalink] 13 Dec 2017, 07:33
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