OFFICIAL EXPLANATIONProject SC Butler: Sentence Correction (SC1)
THE PROMPTQuote:
Those who are concerned about the environment
question if the timber industry, interested in cost-efficiency, might not be initiating a program that increased productivity but polluted nearby rivers and streams.
• Meaning?
People who are concerned about the environment wonder about what the timber industry is doing or, more likely, what the timber industry
did (note the past tense words
increased and
polluted).
Perhaps the timber industry created a program that increased productivity but polluted rivers and streams.
• IF vs. WHETHER
→
If is used to express a conditional or hypothetical.
--
If this thing happens, [then] that thing happens. (We usually omit the word
then.)
-- If this thing were to happen, [then] that thing would happen.
Tips
Look for a [tacit] "then" clause. If the sentence involves a then (or consequence) part, use
if.
If you cannot find a
then part of the sentence, do not use
if.
→
Whether is used to introduce alternative possibilities or choices.
-- Easy and obvious:
Rohit does not know whether he will take the GMAT or the LSAT.-- Medium, not obvious:
Reva asked whether she should bring dessert to the dinner party. (Perhaps she should not bring dessert.)
-- Hard, not obvious:
Annabelle planned a picnic even though she did not know whether it would rain. (It could rain. It could not rain.)
Tips
Can you coherently insert the words "or not" after the word
whether or after the clause that
whether introduces?
(Except in extraordinary circumstances described in
this article, do not actually write or say "or not," but do insert the phrase to determine whether the insertion is coherent.)
Let's try inserting the words
or not.
→ Annabelle planned a picnic even though she did not know whether [or not] it would rain.

YES, "or not" makes sense.
Whether is correct.
→ I asked her to call me IF [or not?] she needed help.
NO. I cannot coherently insert "or not." Use
if.
Many native speakers in informal conversation use the word
if when they should use
whether.
→
I don't know, I cannot decide, and
I wonder are common expressions that should almost always be followed by
whether.
I don't know whether he likes hamburgers. (He might not like them.)
I cannot decide whether I believe in extra-terrestrial life. (I might not believe in them.)
I wonder whether he will be on time. (He might not be on time.)
• verbs:
watch the timeline.
→ MIGHT: very often,
might introduces hypothetical or contrary-to-fact situations—events that have not yet happened.
Well, if the events have not yet happened, then other verbs in the sentence should not be alluding to the past.
→ WERE: in this sentence,
were is part of a subjunctive construction—
were, too, describes events that have not yet happened.
If the events have not happened, we should not discuss them in past tense. Full stop.
The past tense verbs, though, are in the nonunderlined portion.
Flip the logic. If the events happened in the past, we should not discuss them in a hypothetical or subjunctive construction.
THE OPTIONSQuote:
A) question
if the timber industry, interested in cost-efficiency, might not be initiating
• not idiomatic
→
if should only be used to introduce a conditional clause, so its use in this sentence is not idiomatic.
• verb tense error
→ this option employs the subjunctive verb phrase
might not be initiating, so look for verb tense errors.
→ The phrase
might not be initiating refers to a pair of possible alternatives.
The timber industry might or might not be initiating a program, but if it is, the present participle
initiating indicates that the program is being initiated in the present.
We have a problem.
The verbs that follow the underlined portion of the sentence are in the simple past tense (
increased and
polluted).
The sentence creates a verb tense error by suggesting the possibility that the timber industry is initiating a program that has effects
in the past.
In sum, the tense of the verb phrase
might not be initiating does not match the tense of the verbs
increased and
polluted.
ELIMINATE A
Quote:
B) question
if the timber industry, interested in cost-efficiency, had not initiated
• not idiomatic
→ this option commits the same error as that in option A.
Do not use
if to describe alternatives such as whether the timber industry increased productivity but polluted nearby waterways.
ELIMINATE B
Quote:
C) question whether the timber industry, interested in cost-efficiency,
might not initiate• verb tense error - don't be fooled
→ Option C corrects the idiom error by replacing
if with
whether, and
whether matches the doubt about possible alternatives that is suggested by the use of the subjunctive tense (
might not initiate).
→ But the verb phrase
might not initiate means that the program has not yet been initiated.
Consequently, this answer choice introduces a verb tense error by suggesting that a program that might be initiated in the future will have effects in the past.
Huh? Nonsensical.
Eliminate C
Quote:
D) wonder
as to whether the timber industry, interested in cost-efficiency,
were to initiate• verb tense error
→ This option creates a verb tense error similar to that in option C by using the subjunctive
were to initiate.Were to initiate suggests that a program that might be initiated in the future will have effects in the past.
• not idiomatic
→
wonder as to whether is not idiomatic
We can wonder
whether XYZ will happen.
We can wonder
about ABC.
We can wonder
who, how, when, where, and
why.
But we cannot
wonder as to anything. Ever.
ELIMINATE D
Quote:
E) wonder whether the timber industry, with its interest in cost efficiency, initiated
• By POE, this option must be the correct answer
• I do not see any errors.
→ Correct idiom
This option uses the idiomatic phrase
wonder whether.→ Correct verb tense
The tense of the verb
initiated matches the tense of the verbs that follow it (
increased and
polluted).
KEEP
The answer is E.COMMENTSThis group of sentences is slippery, in part because we do not often see sentences that report uncertainty about the past.
All of you aspirants handled the question very well.
You all seem to have honed a tool that is indispensable when taking the GMAT: the ability to wade or muddle through five options until the sentence starts to make sense.
I get the impression that you all did not get stuck and that you took bite-sized pieces out of each option.
In other words, you started with what you knew.
For readers who did get stuck, no matter! No worries.
Better that you should get stuck on the forum, figure out what went wrong, and go to the test armed and ready.
Nice work, aspirants.
Stay safe.