Because the enemy's new ship is the quietest and it is therefore the

Question

Because the enemy's new ship is the quietest  and it is therefore the most elusive submarine, it is being increasingly viewed  by the military as a threat to security.

(A) and it is therefore the most elusive submarine, it is being increasingly viewed

(B) it is therefore the most elusive of submarines, and it has increased the view

(C) and therefore the most elusive submarine, it is being increasingly viewed

(D) and therefore it is the most elusive of submarines, there is an increasing view

(E) therefore being the most elusive of submarines, it is increasingly viewed

generis · Accepted Answer

OFFICIAL EXPLANATION

bravoseries  , welcome to GMAT Club!

Prateekj05  and  Darshi04  (belated welcome!), I very nearly did not craft an OE because your answers are superb.

I decided to emphasize aspects that neither of you covered or that one or both of you covered somewhat cryptically.

This question belongs in the category,  When to Look for the Errors that are the Easiest to Spot.

But which errors are easier to spot, an independent clause ("it is") that does not belong
and ruins a logical connection embedded in another logical connection, or
misuse of the word "view" and a "being" that is clearly out of place?

I think that the second issues are easier.

• Errors in the second part of the sentence

• B incorrectly and illogically uses "it has increased the view" by the military as a threat to security.
A submarine cannot increase a view   BY the military
The enemy ship does not make the view more numerous or more expansive.
Further,  view by  is not correctly used. 
"increased the view by" ruins the  correct  logic of "a something IS viewed BY someone AS XYZ."
--  Eliminate B

• D illogically uses  there is an increasing view by. 
Because the new ship is the most elusive of submarines, there is an increasing view   by the military as a threat to security.
1) A view can be held by the military. A view can be described as "among the military." 
But a view BY the military is nonsensical. 
2) the referent is missing: there is an increasing view IN or AMONG the military OF the enemy ship as a threat to security.
A view implies "a view OF something" as a threat. The something is missing. 
--  Eliminate D

• E lacks a logical connector and unnecessarily inserts the word "being"
Because the enemy's new ship is the  quietest therefore being  the most elusive of submarines. . . 
E is missing a conjunction (the quietest  and  therefore the most elusive)
E's use of  being  is extraneous and incorrect.
 X is the Y and   therefore the Z  construction is violated. 
E incorrectly states  X is the Y therefore being the Z  
--  Eliminate E

The harder question: A or C? 
Exactly one pair of words distinguishes A from C:  it is

A) Because the enemy's new ship is the quietest  and  it is  therefore the most elusive submarine, it is being increasingly viewed  by the military as a threat to security.

C) Because the enemy's new ship is the quietest  and therefore the most elusive submarine, it is being increasingly viewed  by the military as a threat to security.

The word "quietest" describes something. 
If we saw "quieter," for example, we would look for a mention of  two  submarines.

If we use a comparative word (quieter, quietest) with a thing, that thing is being compared to another thing or things. We cannot compare a thing to nothing.  The other item(s) in the comparison have to be mentioned correctly.

When we see  quietest  we know we need to find at least a  reference  to 
a group of somethings to which "quietest" is  directly  attached.

The challenge is that we have a singular noun,  submarine.

Parallel and condensed construction  
-- The enemy's ship is the quietest  
-- The enemy's ship is the quietest  .
-- The enemy's ship is the quietest  submarine of all the enemy's submarines ] and therefore the most elusive  submarine  ].
Now we have parallel construction, which then is condensed:
-- The enemy's ship is the quietest and therefore the most elusive submarine.

That construction is in   correct answer C.

• Option A incorrectly inserts "it is. " 
The "it is" interrupts the connection between "quietest" and "submarine."

There is no mention of submarines right after "quietest."
"Quietest" gets connected to its object   only through the phrase "and therefore the most elusive submarine." 
  . . . ship is the quietest   submarine

Option A creates a "quietest" something, but the subsequent IT is severs the tie between  quietest  and  submarine 
"Because the enemy's new  ship is the quietest    and  it  is therefore the most elusive submarine. . ."
"The quietest" cannot "hop over" a pronoun and another verb in order to connect to  the most elusive .
Wrong: "The enemy's ship is the quietest   and therefore it is the most elusive submarine"
-- Eliminate A

•   Meaning and Embedded Logic : 
Level 1 logic:
The enemy's new ship is the  quietest  submarine of all the enemy's submarines and  therefore the most elusive  submarine of all the enemy's submarines.
Level 2 logic: 
Because this submarine is so  elusive,  the military increasingly views it as a  threat  to security.

1) Q, therefore E
(Because Q, E)
Q => E
2) Because E, T
(E, therefore T)
E => T

We have   one logical relationship embedded in another  :
(1) The new ship is the quietest submarine  ; therefore, it is the most elusive submarine  
 X is the the quietest of all submarines; therefore X is the most elusive of all submarines

(2) Because the submarine is the most elusive submarine  , it is viewed by the military as a threat.
 X is the enemy's most elusive submarine; therefore X is viewed as a military threat

•   Therefore  is not redundant.

-- The embedded logic makes "therefore" necessary to connect  quietest  to  most elusive 
in a way that is separate from the logical connector   of the larger sentence in which quietest/elusive is embedded.
-- The larger sentence contains another, different connector— because 
Because X is the most Y, X is being increasingly viewed by the military as a threat to security.

Darshi04  and  Prateekj05  -  bravo. Impressive. Kudos to both .

Prateekj05 · Answer

I believe this sentence has a parallelism error.  "Quietest"  is a superlative so  "most elusive submarine"  needs to be used. Also, the sentence starts with "because" which is a dependent clause. So we cannot have a conjunction  "and"  connecting a dependent clause with an independent clause.

In option  A and D , dependent and independent clauses are connected using "and".  -> Eliminated 
In option  B , the meaning is illogical. It implies that "ship has increased the view" How can a ship increase the view?  -> Eliminated 
In option  E , conjunction  "and"  is required to maintain parallelism.  -> Eliminated 
In option  C ,  "quietest" and "elusive" are parallel . The meaning is correct and the use of "being" is also correct. This should be the  correct answer

Darshi04 · Answer

Meaning Analysis 
The enemy's new ship is the quietest. It is therefore the most elusive submarine. The military has been increasingly viewing this as a threat to security.

Choice A:  "it is" is redundant. Basically the author is trying to say that the enemy's new ship has 2 main qualities, namely it is the quietest and (therefore) the most elusive submarine. In my opinion, we could even make do without "therefore" without affecting the meaning. But adding "it is" before "therefore" is simply redundant.

Choice B:  Similar error as A. Also "increased the view by the military" is incorrect because the enemy's ship cannot increase the "view of the military". Also, the "and" after the comma doesn't make sense. When we use "because" we are establishing cause and effect relationship. Here the cause is "new ship is quiet", effect is "military views the ship as a threat". We do not use "and" when we show cause and effect by using "because".

Choice C:  No errors. Correct.

Choice D:  Similar error as A. Also, "there is an increasing view by the military..." is awkward. This part of the sentence needs a pronoun that refers back to the subject (the enemy's ship)

Choice E:  Incorrect usage of "being" (present participle) since we are already saying "The enemy's  ship is ".

Hope this makes sense.

bravoseries · Answer

The answer is "and therefore the most elusive submarine, it is being increasingly viewed".

C

Darshi04 · Answer

Generis , Thank you for your kind words and more so for such a detailed explanation for me to understand what I could have explained better.

shahsuhailp · Answer

Meaning: Per the author, the enemy's ship is the quietest. Since it is the quietest it is therefore the most elusive submarine. Because of these qualities of the enemy's ship it viewed by military as a threat to security.

Error:
1) The author states two qualities of the enemy's ship. These qualities should be connected using the word "and" . Use of "it is" after "and" is incorrect and breaks the parallelism.

Answer: C

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Because the enemy's new ship is the quietest and it is therefore the

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