OFFICIAL EXPLANATIONProject SC Butler: Sentence Correction (SC1)
THE PROMPTQuote:
In the eighteenth century, the conservation ethic evolved to include the core principles that human activity can cause damage to the
environment and that people have a civic duty to maintain the environment for future generations.
The word
and in the non-underlined portion is a fairly strong alert that the question is testing parallel structure.
If we re-read the whole sentence, we might notice the phrase
the core principles that.GMAC likes to test parallel structure with
that.
In fact, if you were short on time, you could make a slam-dunk guess by
noticing which options contained another that-clause.
Then you would check those options for parallel construction.
The
core principles are
(1) that human activity can cause damage to the environment, and
(2) that people have a civic duty to maintain the environment for future generations.
In this case, you would have one choice in which you would find the word
that.
Yes, given enough time, it is always better to eliminate four wrong answers than to try to choose one best answer—but if you are running out of time, do whatever it takes to make a guess.
THE OPTIONSQuote:
A) environment and that people have a civic duty to maintain
•
that people have a civic duty to maintain the environment is parallel to
that human activity can cause damage to the environment.• I see no other errors
KEEP
Quote:
B) environment and
[that] people
would have a duty to maintain
• the writer is expressing a general truth in the form of historic fact
→ GMAC follows the modern convention of announcing general truths by using simple present tense
• The verb
would is incorrect.
→ we use
would in hypothetical situations and in reported/indirect speech (to backshift from present tense will to past tense would)
This situation involves neither. (If you have no idea what I mean by reported or indirect speech, start by reading
this blog post.)
• parallelism is lost
. . . core principles
(1)
that human activity can cause damage
and
(2)
people would have a duty to main
ELIMINATE B
Quote:
C) environment and
[that] people
had a civic duty to maintain
•
had is the wrong verb tense
→ as I noted above, when we report general truths, we use simple present tense: people
have• same parallelism problem as that in B
ELIMINATE C
Quote:
D) environment,
with people having a civic duty to maintain
•
principles is plural, and this "with people having" may be the second principle, but so far this second principle sounds awkward and it should be attached to the first principle with
and, not
with• compare this option to option A.
No contest. Option A is much clearer, is parallel, and is stylistically superior.
ELIMINATE D
Quote:
E) environment and
[that] people have a civic duty
for the maintaining of• same parallelism problem as that in B
• the idiom is duty
to, not
duty for•
maintaining, a gerund (verbING), is not preferred to the dedicated noun,
maintenance.
•
duty for the maintaining of is unidiomatic and a stylistic disaster
ELIMINATE E
The correct answer is A.
COMMENTS dharam9610 , welcome to SC Butler.
ShreyKapil08 , you wrote:
I think a colon (:) placed right after "...core principles" would make it clear that what follows is list of principles that were included. Thoughts?You are correct about the effect of the colon. Nicely done.
Such a colon would make discerning parallelism a lot easier, though, a situation that is less than ideal in an SC question.

In fact, I wish that this question tested parallelism more strenuously.
(In other words, you all escaped hard parallelism questions because the verbs in the options were bad and allowed you to eliminate that not-parallel option.
On the other hand, these SC questions are really hard to write.)
I am glad to see everyone.
Answers range from very good to excellent. Kudos to all.