OFFICIAL EXPLANATIONProject SC Butler: Sentence Correction (SC2)
Quote:
By day, hippos enjoy bathing in water to cool themselves down,
which might have contributed to their reputation for being relatively sluggish and sedentary.
A)
which might have contributed to their reputation for being
B)
which might contribute to
its reputation for being
C) and
this might have contributed to their reputation
to beD) a preference that might contribute to their reputation for being
E) a preference
which might have contributed to their reputation
to be SHORT POEEliminate A and B because
which lacks an antecedent.
Eliminate E because it uses
which as a restrictive pronoun.
Eliminate C because it uses
this as a standalone pronoun.
The answer is D.
The distinction between
which and
that and the use of
this as a standalone pronoun are fairly controversial and more nuanced than the hatchet-job above.
• Split #1 — which: the case of the Missing Antecedent.
In options A and B,
which has no antecedent.
→
which must refer to a stated noun and cannot refer to the entire previous clause or its idea
Option B also incorrectly pairs the singular pronoun
its with the plural noun
hipposEliminate A and B
• Split #2 — which should be set off by commasIn British English,
which and
that are interchangeable.
In U.S. English and on the GMAT,
which and
that are not interchangeable.
→
which introduces nonessential information and is set off by commas
→
that introduces essential information and is almost never set off by commas
People debate whether GMAT will continue to observe the distinction between
which and
that. In at least one official question in the
nonunderlined portion,
which was used without commas to introduce essential modifiers.
On the other hand, I have never seen a correct answer choice (i.e., the underlined part) in which the word
which introduced essential material and was not set off by commas.
SPOILER ALERT: In addition, in 2020, GMAC published a new official question that tests this very distinction.
The question remains in the 2021 Official Guide. You can find that question
here.
In option E, the word
which is used without commas and thus to introduce essential material.
Not good, especially because we have a better answer (option D) that avoids misuse of
which.Furthermore,
reputation to be is not idiomatic.
Eliminate E. (If you want to be conservative, hold this option and compare it to D. No contest.)
• Split #3 — this is not a standalone pronoun 99.9% of the time In option C,
this is incorrectly used as standalone pronoun rather than being properly followed by a noun.
→
this, a demonstrative adjective, should "point" to a noun
(this bookstore, this bottle of wine) and should not be a standalone pronoun.
→ GMAC has rejected
this as a standalone pronoun in all but one question, which you can find
SPOILER ALERT here.
One exception does not overturn a longstanding pattern, although that exception
does probably signal that we should not automatically reject "this" as a standalone pronoun.
→ We are not "automatically" rejecting option C.
As is the case in option E, option C uses the unidiomatic
reputation to be.Finally, compare to option D, which is grammatical and without problematic constructions.
Eliminate C
The correct answer is DOption D contains a special kind of appositive called a
summative modifier.
Summative ModifiersIn option D, the words "a preference" summarize the idea expressed by the preceding clause.
We need that preceding clause to be summarized because the clause describes a preference that it never actually names with a noun (that we could then modify with "contributed to their reputation for being sluggish and sedentary").
Learn to spot the difference between a comma splice, on one hand, and a summative modifier on the other.
The former is illegal. The latter is common in good writing.
COMMENTSivolve , welcome to GMAT Club.
These answers are very good.
The different methods of attack and kinds of analysis will be helpful to future aspirants (the more ways you see a problem explained, the better).
Very nicely done.