Question: Because the collagen fibers in skin line up in the direction of tension, surgical cuts made along these so-called Langer’s lines sever fewer fibers and is less likely to leave an unsightly scar.

(A) Because the collagen fibers in skin line up in the direction of tension, surgical cuts made along these so-called Langer’s lines sever fewer
(B) Because the collagen fibers in skin line up in the direction of tension, a surgical cut having been made along these so-called Langer’s lines severs less
(C) Because the collagen fibers in skin line up in the direction of tension, a surgical cut made along these so-called Langer’s lines severs fewer
(D) With the collagen fibers in skin lining up in the direction of tension, surgical cuts made along these so-called Langer’s lines sever less
(E) With the collagen fibers in skin lining up in the direction of tension, a surgical cut made along these so-called Langer’s lines sever fewer

“Because the collagen fibers in skin line up in the direction of tension, surgical cuts” - is a GMAT sentence correction question. These types of questions contain grammatical errors in the underlined sentence, and we have to choose the correct statement from the options. GMAT sentence correction is part of GMAT verbal.

Answer: C
Explanation:
To validate the phrase's desired alteration, the tenets listed below can be used:

• Parallelism
• Examining two separate aspects
• Modifiers

This is how the sentence is put together:
Surgery along these so-called Langer's lines severs fewer collagen fibres and is less likely to produce an ugly scar because collagen fibres in skin line up in the direction of stress.
The second IC of the composite main clause has a singular verb. Consequently, "cut" should be the singular subject of the main phrase. Eliminate A, and D.

Option A is incorrect:
The incorrect response is Option A. Surgical cuts made along these so-called Langer’s lines sever fewer---->"surgical cuts" is plural here.

Option B is incorrect:
Option B is the wrong answer. Because "because" is a subordinate clause, the phrase lacks a main clause, which it needs. Also, parallelism is faulty. The modifier ‘having been made’ is wrong diction. It should be just the past participle ‘made’. In addition the term ‘fibres’ is a countable plural noun and hence we need to use fewer to describe it. Hence it is wrong choice.

Choice C is correct.
This is the correct choice. The causal relationship implied by the text is faithfully stated by the adverbial conjunction because. The singular verbs severs and is, as well as the singular subjects cut and fewer, suitably modify countable fibres.

Choice D is incorrect.
This is the wrong decision. D is also out for the same reasons as 'B'.

Choice E is incorrect.
This is the wrong decision. S-V number problem between ‘a cut’ and "sever."

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