When you post an SC, please underline the relevant portion.
In metalwork one advantage of adhesive-bonding over spot-welding is that the contact, and hence the bonding, is effected continuously over a broad surface instead of a series of regularly spaced points with no bonding in between.
(A) instead of
(B) as opposed to
(C) in contrast with
(D) rather than at
(E) as against being at
A:
THE CONTACT is effected continuously instead of A SERIES
B:
THE CONTACT is effected continuously as opposed to A SERIES
C:
THE CONTACT is effected continuously in contrast with A SERIES
In these answer choices, a reader might construe that THE CONTACT is being compared to A SERIES -- an illogical comparison.
Eliminate A, B and C.
E:
is effected CONTINUOUSLY as against BEING at a series of points
Here,
being serves as the object of the preposition
against.
The object of a preposition must be a NOUN.
An adverb such as
continuously cannot be compared to a noun such as
being.
Eliminate E.
The correct answer is
D.
D:
The contact is effected CONTINUOUSLY rather than AT A SERIES OF POINTS.
Here, one adverb (
continuously) is compared to another
(at a series of points).
This comparison makes sense.
Note the following:
To show PREFERENCE in a comparison, the GMAT tends to use
rather than.
I discuss the difference between
instead of and
rather than here:
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