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# The private companies that managed airport screening during the twenti

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Senior SC Moderator
Joined: 22 May 2016
Posts: 3853
The private companies that managed airport screening during the twenti  [#permalink]

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28 Mar 2020, 23:03
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00:00

Difficulty:

35% (medium)

Question Stats:

67% (01:20) correct 33% (01:33) wrong based on 141 sessions

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Project SC Butler: Day 231: Sentence Correction (SC2)

The private companies that managed airport screening during the twentieth century allowed travelers to bring a considerable variety of items through the security checkpoint, did not focus as much on travelers' physical or behavioral characteristics as on security risk factors, and did not maintain terrorism watch lists.

A) The private companies that managed airport screening during the twentieth century

B) Managing airport screening during the twentieth century, there were private companies that

C) Private companies during the twentieth century, which managed airport screening,

D) During the twentieth century, the airport screening that was managed by private companies

E) Private companies managed airport screening during the twentieth century, which

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Senior SC Moderator
Joined: 22 May 2016
Posts: 3853
The private companies that managed airport screening during the twenti  [#permalink]

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28 Mar 2020, 23:03
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OFFICIAL EXPLANATION

Project SC Butler: Day 231: Sentence Correction (SC2)

The private companies that managed airport screening during the twentieth century allowed travelers to bring a considerable variety of items through the security checkpoint, did not focus as much on travelers' physical or behavioral characteristics as on security risk factors, and did not maintain terrorism watch lists.

A) The private companies that managed airport screening during the twentieth century
B) Managing airport screening during the twentieth century, there were private companies that
C) Private companies during the twentieth century, which managed airport screening,
D) During the twentieth century, the airport screening that was managed by private companies
E) Private companies managed airport screening during the twentieth century, which

EXPLANATION (parts of this explanation are verbatim)

Quote:
A) The private companies that managed airport screening during the twentieth century

In option A, the underlined text that manages airport screening appropriately modifies private companies, telling which private companies are being discussed.

Then during the twentieth century correctly modifies managed airport screening[ as an adverbial phrase], telling us when this action occurred.
The verb managed is correctly in the simple past tense.
No other issues.
I suspect that (A) is the answer.

Quote:
B) Managing airport screening during the twentieth century, there were private companies that

Heads up: When each choice arranges the elements differently (and finding splits is not visually easy), start looking for modification problems.
Look for modifiers that are not near the things that they modify.

In option B, the passive construction "there were" is not necessary or helpful.
GMAC generally dislikes there were.
There were might also create confusion: what was managing airport screening?
This sentence does not convey as clear and direct a connection between the private companies and their function as option A does.

→ The intro is a participle phrase (an ___ING phrase).
→ Such phrases can modify either the entire subsequent clause (in an adverbial manner) or the subject of that clause (in an adjectival manner).
→ Well, "managing airport screening" describes a something—a noun. The phrase is an adjective.

In this post, here, I discuss six types of introductory phrases and what each must modify.
ELIMINATE B
Quote:
C) Private companies during the twentieth century, which managed airport screening,

Option C makes it sound as though either all private companies in the twentieth century managed airport screening or (less likely) that the twentieth century managed airport screening.
Both are illogical.
ELIMINATE C
Quote:
D) During the twentieth century, the airport screening that was managed by private companies

Option D uses passive voice and in the process says that airport screening itself did various things.
ELIMINATE D
Quote:
E) Private companies managed airport screening during the twentieth century, which

Option E makes it sound as though the twentieth century performed all those actions.
Although "which" can reach back over prepositional phrases to get to its noun, private companies, which cannot jump over a verb such as managed.
ELIMINATE E

This question is difficult because clear splits aren't evident and no answer is horrible.
The psyche can get nervous when we can't to our business of eliminating wrong answers.
That fact is normal and okay. We just push through it.

ravigupta2912 and thenikhilseth , very nicely done. Happy kudos.
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Joined: 04 Aug 2019
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Location: India
GPA: 3.33
Re: The private companies that managed airport screening during the twenti  [#permalink]

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29 Mar 2020, 01:46
1
My choice is A option

A) The private companies that managed airport screening during the twentieth century- Correct

B) Managing airport screening during the twentieth century, there were private companies that- Incorrect
This option conveys that there were private companies that manage airport screening and allow passengers...
But it changes the intended meaning.
Intended meaning- Private companies that manage airport screening allow passengers. Here use of restrictive modifier 'THAT' is needed because we are only talking about the private companies that manage airport screening.

C) Private companies during the twentieth century, which managed airport screening- Incorrect
Which refers to 20th century.

D) During the twentieth century, the airport screening that was managed by private companies- Incorrect
It is conveying that airport screening allow passengers- illogical

E) Private companies managed airport screening during the twentieth century, which-Incorrect
Which refers to 20th century
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Joined: 26 May 2019
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GMAT 1: 650 Q46 V34
WE: Consulting (Consulting)
Re: The private companies that managed airport screening during the twenti  [#permalink]

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29 Mar 2020, 09:54
1
A) The private companies that managed airport screening during the twentieth century - Correct option. No visible error. "that" noun modifier has been correctly used.

B) Managing airport screening during the twentieth century, there were private companies that -- Modifier error. The entity managing airport screening should come after the comma. Eliminated.

C) Private companies during the twentieth century, which managed airport screening, -- Modifier placement error. Private companies, which...screening, during the... sounds better. In this sentence "which" illogically seems to be modifying "twentieth century". Eliminated.

D) During the twentieth century, the airport screening that was managed by private companies -- Illogical. Read through the sentence and we see "airport screening that was.. companies allowed" What?! airport screening allowed travellers to bring stuff? No. It was the private companies that did the screening.

E) Private companies managed airport screening during the twentieth century, which -- Modifier issue. Same as C. Which illogically seems to be modifying 20th cent. Eliminated.
Senior SC Moderator
Joined: 22 May 2016
Posts: 3853
Re: The private companies that managed airport screening during the twenti  [#permalink]

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01 Apr 2020, 01:41
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The official explanation is here.
Re: The private companies that managed airport screening during the twenti   [#permalink] 01 Apr 2020, 01:41