Last visit was: 19 Nov 2025, 14:52 It is currently 19 Nov 2025, 14:52
Close
GMAT Club Daily Prep
Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Close
Request Expert Reply
Confirm Cancel
User avatar
Sajjad1994
User avatar
GRE Forum Moderator
Joined: 02 Nov 2016
Last visit: 19 Nov 2025
Posts: 17,304
Own Kudos:
49,312
 [11]
Given Kudos: 6,180
GPA: 3.62
Products:
Posts: 17,304
Kudos: 49,312
 [11]
3
Kudos
Add Kudos
8
Bookmarks
Bookmark this Post
User avatar
generis
User avatar
Senior SC Moderator
Joined: 22 May 2016
Last visit: 18 Jun 2022
Posts: 5,272
Own Kudos:
Given Kudos: 9,464
Expert
Expert reply
Posts: 5,272
Kudos: 37,389
Kudos
Add Kudos
Bookmarks
Bookmark this Post
avatar
puneetb
Joined: 19 Jul 2018
Last visit: 25 May 2021
Posts: 25
Own Kudos:
Given Kudos: 225
Location: India
GMAT 1: 680 Q49 V33
GRE 1: Q162 V167
GPA: 3.7
GMAT 1: 680 Q49 V33
GRE 1: Q162 V167
Posts: 25
Kudos: 4
Kudos
Add Kudos
Bookmarks
Bookmark this Post
avatar
AlexGmat2017
Joined: 13 Jan 2017
Last visit: 20 Apr 2021
Posts: 31
Own Kudos:
Given Kudos: 92
Posts: 31
Kudos: 5
Kudos
Add Kudos
Bookmarks
Bookmark this Post
What about if we omit the "comma" in the 1st choice? If so, it means that clause "Unsure..." modifies the word "student". But if we have "comma" the clause "Unsure..." must modify the verb "stare". Where is the right answer?
User avatar
gvij2017
Joined: 09 Aug 2017
Last visit: 18 Jun 2024
Posts: 674
Own Kudos:
Given Kudos: 778
Posts: 674
Kudos: 486
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Can you explain why A is wrong?
I understand D is the correct option, but I didn't find any issue with A too.
User avatar
generis
User avatar
Senior SC Moderator
Joined: 22 May 2016
Last visit: 18 Jun 2022
Posts: 5,272
Own Kudos:
Given Kudos: 9,464
Expert
Expert reply
Posts: 5,272
Kudos: 37,389
Kudos
Add Kudos
Bookmarks
Bookmark this Post
AlexGmat2017
What about if we omit the "comma" in the 1st choice? If so, it means that clause "Unsure..." modifies the word "student". But if we have "comma" the clause "Unsure..." must modify the verb "stare". Where is the right answer?
AlexGmat2017 (no, we don't want to remove the comma, though I can see why you might think so :) ) and puneetb - Just curious: what did you dislike about option D?

Unsure is an adjective that modifies students
Intro phrases that begin with (or are anchored by) adjectives modify the subject of the immediately following clause.

Here are a couple of official examples constructed with that pattern:

OG VR 2019 #219, HERE

OG 13 #88 HERE

(Dozens of examples exist. Those two came to mind quickly.)

Unsure to whom is not idiomatic and if used at all, the phrase is coupled with a linking verb (is, are, become, seem, appear)

Unsure to whom is almost never used in high-level prose. On rare occasions it is accompanied by a linking verb.
In respected publications, the construction appears this way:
[T]he consultants found that 38 percent of officers who went to Lower Manhattan said that they were unsure to whom they should report.*
(I found a mere two examples of the phrase in the 10 respected publications that I checked.)

Option (D) states "they were unsure to whom."
That usage is consistent with what I described above.
AS means "because."
In order to avoid this discussion about "unsure to whom," I previously advised a focus on causation.

(D) has issues, too. AS could mean "during the time that."
In general, GMAC uses "because" at the beginning of a sentence similar to this one, not "as."

This question is not official. Do not worry about it.
Finding SC questions is hard. Some will be flawed. This one is flawed.
Allegedly the question tests whether a test taker can recognize when to use who and when to use whom.

I will change the answer to (A) because now I am almost certain that you will never see "unsure to whom," and if the point is simply to test whether a person knows how to use who or whom, (A) does the job.

• I am 99.9 percent certain that you will never see "unsure to whom."
• In my research, I found
-- zero official questions that use "unsure to whom."
-- one official question that uses "unsure about."
That GMAT Prep question is HERE

I hope that helps.


*Unsure is an adjective that takes a preposition when used as it is in this question. That preposition is not "to."
Some adjectives automatically take certain prepositions.
Unsure takes about and of.
Unsure also takes WH- words such as whether.
Quirk et al. A Comprehensive Grammar of the English Language. [2010 (1985)]. §§ 16.68-73

** Rashbaum, William K. (2002, July 27). Report on 9/11 Finds Flaws In Response of Police Dept. New York Times 27 July 2002. Retrieved from https://www.nytimes.com (here, 23 June 2019)
User avatar
generis
User avatar
Senior SC Moderator
Joined: 22 May 2016
Last visit: 18 Jun 2022
Posts: 5,272
Own Kudos:
37,389
 [1]
Given Kudos: 9,464
Expert
Expert reply
Posts: 5,272
Kudos: 37,389
 [1]
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
gvij2017
Can you explain why A is wrong?
I understand D is the correct option, but I didn't find any issue with A too.
Hi gvij2017 in the post just above, I explained why D seems better to me than A does.

Even so, I will change the answer to (A).

I discovered in my research that this question is supposed to test the usage of who and whom.
Option (A) does so.
Now that I have completed too much research (the question is not official), I would bet a lot of money that GMAC will never publish a question that includes unsure to whom.
In my opinion, people should understand the adjectivial modifier and the pronoun and should not worry about the difference between A and D.
So I changed D to A.

I hope that helps.
Moderators:
GMAT Club Verbal Expert
7443 posts
GMAT Club Verbal Expert
231 posts
189 posts