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# The new house's front door is secured by an electronic lock

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The new house's front door is secured by an electronic lock [#permalink]

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17 Oct 2013, 21:44
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The new house's front door is secured by an electronic lock; a feature that not only allows residents to lock and unlock the door without physical keys, but also may prevent them from entering the house during a power outage.

a) a feature that not only allows residents who lock and unlock the door without physical keys, but also may prevent
b) a feature allowing residents without a physical key to lock or unlock the door, but also possibly preventing
c) a feature allows residents locking or unlocking the door without physical keys, but also possibly preventing
d) this feature allows residents to lock and unlock the door without a physical key, but may also prevent
e) this feature not only allows residents without physical keys to lock or unlock the door, but also prevents

OA after discussion.
[Reveal] Spoiler: OA

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Last edited by adg142000 on 18 Oct 2013, 03:31, edited 1 time in total.

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Re: The new house's front door is secured by an electronic lock [#permalink]

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17 Oct 2013, 23:08
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Expert's post
The new house's front door is secured by an electronic lock; a feature that not only allows residents to lock and unlock the door without physical keys, but also may prevent them from entering the house during a power outage.

a) a feature that not only allows residents who lock and unlock the door without physical keys, but also may prevent
b) a feature allowing residents without a physical key to lock or unlock the door, but also possibly preventing
c) a feature allows residents locking or unlocking the door without physical keys, but also possibly preventing
d) this feature allows residents to lock and unlock the door without a physical key, but may also prevent
e) this feature not only allows residents without physical keys to lock or unlock the door, but also prevents

OA after discussion.

Choice A should be same as the underlined part of the sentence. Here, in choice A, lock is preceded by 'who' where as, in the underlined part of the sentence, lock is preceded by 'to'. So this creates confusion. Here I am assuming the wording of Choice A and posting my answer in light of that.

A) INCORRECT :- The ideal structure is Not only x...... but also y......, in which you should have something concrete x that follows not only. In this choice who lock and unlock the door without physical keys is the relative clause modifying the noun residents. If we ignore this modifier we would left with a feature that not only allows residents....................., but also may prevent them................. Since there is nothing that describes what is not only, this structure does not make sense.

B) INCORRECT :- This choice has the modifier issue. without a physical key should logically modify the lock or unlock the door, but here, because of its wrong placement, it is modifying residents. Hence the sentence means that residents do not have the physical key. well we do not know this.

C) INCORRECT :- With the structure but also possibly preventing we are introducing hypothetical situation that feature may prevent residents from entering the house during powercuts. In hypothatical mood infinitive form of the verb preferred over gerund form.

D) CORRECT :- correct and concise structure.

E) INCORRECT :- Incorrect for the same reason cited at Choice B.

Hope that helps!
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Re: The new house's front door is secured by an electronic lock [#permalink]

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18 Oct 2013, 00:27
a) a feature that not only allows residents who lock and unlock the door without physical keys, but also may prevent--- Not Only, But also is not parallel.
b) a feature allowing residents without a physical key to lock or unlock the door, but also possibly preventing--- Incorrect, Not only is missing in the sentence. Incorrect idiom.
c) a feature allows residents locking or unlocking the door without physical keys, but also possibly preventing--- Same as B
d) this feature allows residents to lock and unlock the door without a physical key, but may also prevent--- Correct. Although it does not use Not only, But also. But it is the best and most parallel answer choice.
e) this feature not only allows residents without physical keys to lock or unlock the door, but also prevents---- Changes meaning. The omission of may changes meaning.

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Re: The new house's front door is secured by an electronic lock [#permalink]

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18 Oct 2013, 03:30
OA is indeed D as it has most concise structure as said
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Re: The new house's front door is secured by an electronic lock [#permalink]

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24 Oct 2013, 09:36
in the option D, the verb in the first part is ALLOWS (singular), whereas in the second part it is PREVENT & not PREVENTS. Can someone tell me, how does the addition of MAY affect the singular form of the verb PREVENTS

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Re: The new house's front door is secured by an electronic lock [#permalink]

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10 Nov 2013, 07:02
I am not getting why option E is wrong?
Another doubt as laveen put it....Can anybody please clarify...

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Re: The new house's front door is secured by an electronic lock [#permalink]

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11 Nov 2013, 20:58
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srinjoy28 wrote:
I am not getting why option E is wrong?
Another doubt as laveen put it....Can anybody please clarify...

As for choice D, In the first phrase, the verb is in simple present tense, so we have to get the verb agree with subject (feature.....allows); however, in the second phrase, the verb is in future tense wherein may is functioning as an auxiliary verb. In this case the rules of subject verb agreement that we follow in simple present tense will not apply for this verb tense. i.e. Irrespective of Singular or Plural subject the verb will be in its simplest form.

feature allows residents...................................................., but feature may also prevent them.......................

In Choice E, As cited in my earlier response, incorrect placement of modifier with or without keys changes the meaning of the sentence.

Hope that helps!
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Re: The new house's front door is secured by an electronic lock [#permalink]

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17 Nov 2014, 05:58
Hello from the GMAT Club VerbalBot!

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Re: The new house's front door is secured by an electronic lock [#permalink]

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28 Jan 2016, 12:49
The new house's front door is secured by an electronic lock; a feature that not only allows residents to lock and unlock the door without physical keys, but also may prevent them from entering the house during a power outage.

a) a feature that not only allows residents who lock and unlock the door without physical keys, but also may prevent
b) a feature allowing residents without a physical key to lock or unlock the door, but also possibly preventing
c) a feature allows residents locking or unlocking the door without physical keys, but also possibly preventing
d) this feature allows residents to lock and unlock the door without a physical key, but may also prevent
e) this feature not only allows residents without physical keys to lock or unlock the door, but also prevents

OA after discussion.

I concluded that the answer is D, ignoring A-C because those sentences could not stand alone...and in the use of the semi-colon, they have to be independent clauses? Am I correct in my thinking?

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Re: The new house's front door is secured by an electronic lock [#permalink]

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29 Jan 2016, 02:08
ZaydenBond wrote:

I concluded that the answer is D, ignoring A-C because those sentences could not stand alone...and in the use of the semi-colon, they have to be independent clauses? Am I correct in my thinking?

I think we have to consider meaning of the sentence here:

Since author added semicolon in the stem , he is trying to add some additional information which should be a clause.
Author is trying to show an advantage of the new locking feature but also worried about a feature that may back fire on the users.
So there is a sense of transition in the mood

This is only explained by (D)

(E) Is also introducing a clause but it is giving a bunch of information stacked one after another rather than showing the intended transition in meaning

(C) can not be used because , when ; is used the following clause must be closely related to what has been discussed earlier.But the clause in (C) seems distracted from the context and is going on its own

(A) AND (B) are noun phrases that can not be used.

So (D) should be the answer !
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Re: The new house's front door is secured by an electronic lock [#permalink]

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29 Jan 2016, 03:35
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Quote:
The new house's front door is secured by an electronic lock; a feature that not only allows residents to lock and unlock the door without physical keys but also may prevent them from entering the house during a power outage.

a) a feature that not only allows residents who lock and unlock the door without physical keys, but also may prevent
b) a feature allowing residents without a physical key to lock or unlock the door, but also possibly preventing
c) a feature allows residents locking or unlocking the door without physical keys, but also possibly preventing
d) this feature allows residents to lock and unlock the door without a physical key, but may also prevent
e) this feature not only allows residents without physical keys to lock or unlock the door, but also prevents

A semicolon should be followed by a free standing but related clause. One can dump the first two options simply on that grammar as what follow the semicolon are simple noun phrases and not verbed clauses. C is guilty of using unparallel symmetry around ‘but’.
E misuses the correlative conjunction ‘not only … ‘but also’ in its intent. Not only but also is used between two same direction phenomena with emphasis on the latter. It cannot be used between two paradoxical situations. E says a positive thing in the first arm but indicates a negative factor in the second. D is the best as many have pointed out for various other reasons.
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Re: The new house's front door is secured by an electronic lock [#permalink]

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17 Aug 2017, 06:11
What " this " is referring in this question ?

can it refers to a clause .

Thanks for your help and time .

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Re: The new house's front door is secured by an electronic lock [#permalink]

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04 Sep 2017, 02:44
E is incorrect for two reason:

Intent is saying although this feature -- good thing-- but --bad thing.
Not only , but also doesn't seem right here. because these two should be on the same side.

Second, may ___may prevent. Difference in meaning.

I have a question with sentence structure:
this feature allows X, but also Y.

Can we write a sentence with but also (without NOT ONLY)?

Narenn

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Re: The new house's front door is secured by an electronic lock   [#permalink] 04 Sep 2017, 02:44
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