Events & Promotions
|
|
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
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Aug 2610:00 AM EDT
-11:59 PM EDT
Save up to $1,000 on select GMAT prep now. This Fall, achieve your most ambitious goals with millions of student success stories behind you.
Aug 2710:00 AM EDT
-11:00 AM EDT
We’ve worked incredibly hard to build TTP into the best test prep experience possible, and it would mean a lot to us to win Newsweek’s 2026 Readers’ Choice Award for Best Test Prep. If TTP has helped you, we’d be incredibly grateful for your vote.
Aug 3110:00 AM PDT
-11:00 AM EDT
Top Scores Start with a Elite Online Prep Course. Enroll for 6 months of access to over 400 hours of GMAT video lessons AND 715+ Score Guarantee!
Sep 0609:30 AM EDT
-12:30 PM EST
Top scores are possible when you enroll in a powerful EA course, taught live online + 6 months access to TTP OnDemand video courses included! Perfect class schedule and easy course access for working professionals. Class starts Sept. 6, 9:30am-12:30pm EST
Sep 0907:00 AM PDT
-10:00 AM PDT
Meet AdComs and explore top Master’s programs - MiM, MiF, MSc, MSBA and more. - Application Fee Waivers - Free 1-Week of GMAT Club Tests: - Master's Application Toolkit - Grand Prize Giveaway
Oct 1308:00 PM EDT
-10:00 PM EDT
Elite scores are possible when you enroll in a powerful GMAT course, taught live online + 6 months access to TTP OnDemand video courses included! Class starts Tues/Thurs Oct. 13, 2026 - Jan. 7, 2027, 8:00pm-10:00pm EST
20 Feb 2026, 20:28
Kudos
Bookmarks
Each spring, Northbridge University runs a weeklong alumni phone-a-thon. In a typical year, the phone-a-thon results in about 400 alumni signing up to mentor current students. Therefore, if the university were to discontinue the phone-a-thon, the number of alumni who sign up to mentor students each year would decline by about 400.
Which of the following is an assumption on which the argument depends?
A. The phone-a-thon costs the university less than the value of 400 alumni mentors’ time.
B. The university would still be able to contact alumni through email if the phone-a-thon were discontinued.
C. Few alumni who currently sign up to mentor through the phone-a-thon would sign up through other university outreach efforts if the phone-a-thon were discontinued.
D. The alumni who sign up to mentor through the phone-a-thon are not substantially more likely than other alumni to sign up to mentor in any given year, regardless of how they are contacted.
E. The university’s other mentoring sign-up channels would not become significantly more effective at attracting mentors if the phone-a-thon were discontinued.
Which of the following is an assumption on which the argument depends?
A. The phone-a-thon costs the university less than the value of 400 alumni mentors’ time.
B. The university would still be able to contact alumni through email if the phone-a-thon were discontinued.
C. Few alumni who currently sign up to mentor through the phone-a-thon would sign up through other university outreach efforts if the phone-a-thon were discontinued.
D. The alumni who sign up to mentor through the phone-a-thon are not substantially more likely than other alumni to sign up to mentor in any given year, regardless of how they are contacted.
E. The university’s other mentoring sign-up channels would not become significantly more effective at attracting mentors if the phone-a-thon were discontinued.
20 Feb 2026, 20:28
Kudos
Bookmarks
Official Solution:
Each spring, Northbridge University runs a weeklong alumni phone-a-thon. In a typical year, the phone-a-thon results in about 400 alumni signing up to mentor current students. Therefore, if the university were to discontinue the phone-a-thon, the number of alumni who sign up to mentor students each year would decline by about 400.
Which of the following is an assumption on which the argument depends?
A. The phone-a-thon costs the university less than the value of 400 alumni mentors’ time.
B. The university would still be able to contact alumni through email if the phone-a-thon were discontinued.
C. Few alumni who currently sign up to mentor through the phone-a-thon would sign up through other university outreach efforts if the phone-a-thon were discontinued.
D. The alumni who sign up to mentor through the phone-a-thon are not substantially more likely than other alumni to sign up to mentor in any given year, regardless of how they are contacted.
E. The university’s other mentoring sign-up channels would not become significantly more effective at attracting mentors if the phone-a-thon were discontinued.
The argument concludes that if Northbridge University discontinued its alumni phone-a-thon, the yearly number of alumni who sign up to mentor students would decline by about 400. The evidence given is that, in a typical year, the phone-a-thon results in about 400 alumni signing up to mentor.
To move from “the phone-a-thon produces 400 sign-ups” to “removing it will reduce total sign-ups by 400,” the argument must assume that these 400 sign-ups would not still occur through other routes. If many of the same alumni would sign up via email campaigns, social media, or departmental outreach once the phone-a-thon ended, then the evidence about the phone-a-thon’s contribution could remain true, but the total number of mentors would not drop by about 400.
(A) Incorrect. Whether the phone-a-thon is cost-effective has no bearing on the predicted size of the decline. The conclusion concerns how many mentors there will be, not whether the program is worth its cost.
(B) Incorrect. The existence of other ways to contact alumni does not have to be assumed for the conclusion to follow. Even if email contact were impossible, the key question would still be whether the 400 phone-a-thon mentors would be replaced elsewhere.
(C) Correct. If few of the alumni who currently sign up through the phone-a-thon would sign up through other outreach efforts if the phone-a-thon disappeared, then eliminating the phone-a-thon would remove roughly those 400 sign-ups from the yearly total. The argument therefore depends on this “no substitution” assumption.
(D) Incorrect. This claims that phone-a-thon sign-ups are not more likely than other alumni to mentor regardless of contact method. But the argument doesn’t need that. Even if phone-a-thon recruits are especially predisposed to mentor, the conclusion could still be true so long as they would not sign up through other channels once the phone-a-thon is gone.
(E) Incorrect. This is a classic GMAT trap answer choice (brings a weaken argument to the assumption fight) and is one step removed from the argument. We are focusing on the mentors and this answer choice talks about channels that recruit these mentors, implying that perhaps something may happen, but as you will see, this "assumption" requires other assumptions to actually hold true, which disqualifies it. This option says other channels would not become significantly more effective if the phone-a-thon ended. But that is not sufficient by itself and therefore not required as some other channels could become more effective while yet other channels would become less effective and still the total might still fall by 400 if the 400 phone-a-thon would be mentors do not switch to those channels. Moreover, we do not know the total number of mentors - what if the total is 401? A more potent assumption would basically say that "Other cannels can become more effective enough to recruit additional 400 mentors". The argument above only needs to rule out substitution by those mentors, not improvements in outreach in general.
Answer: C
Each spring, Northbridge University runs a weeklong alumni phone-a-thon. In a typical year, the phone-a-thon results in about 400 alumni signing up to mentor current students. Therefore, if the university were to discontinue the phone-a-thon, the number of alumni who sign up to mentor students each year would decline by about 400.
Which of the following is an assumption on which the argument depends?
A. The phone-a-thon costs the university less than the value of 400 alumni mentors’ time.
B. The university would still be able to contact alumni through email if the phone-a-thon were discontinued.
C. Few alumni who currently sign up to mentor through the phone-a-thon would sign up through other university outreach efforts if the phone-a-thon were discontinued.
D. The alumni who sign up to mentor through the phone-a-thon are not substantially more likely than other alumni to sign up to mentor in any given year, regardless of how they are contacted.
E. The university’s other mentoring sign-up channels would not become significantly more effective at attracting mentors if the phone-a-thon were discontinued.
The argument concludes that if Northbridge University discontinued its alumni phone-a-thon, the yearly number of alumni who sign up to mentor students would decline by about 400. The evidence given is that, in a typical year, the phone-a-thon results in about 400 alumni signing up to mentor.
To move from “the phone-a-thon produces 400 sign-ups” to “removing it will reduce total sign-ups by 400,” the argument must assume that these 400 sign-ups would not still occur through other routes. If many of the same alumni would sign up via email campaigns, social media, or departmental outreach once the phone-a-thon ended, then the evidence about the phone-a-thon’s contribution could remain true, but the total number of mentors would not drop by about 400.
(A) Incorrect. Whether the phone-a-thon is cost-effective has no bearing on the predicted size of the decline. The conclusion concerns how many mentors there will be, not whether the program is worth its cost.
(B) Incorrect. The existence of other ways to contact alumni does not have to be assumed for the conclusion to follow. Even if email contact were impossible, the key question would still be whether the 400 phone-a-thon mentors would be replaced elsewhere.
(C) Correct. If few of the alumni who currently sign up through the phone-a-thon would sign up through other outreach efforts if the phone-a-thon disappeared, then eliminating the phone-a-thon would remove roughly those 400 sign-ups from the yearly total. The argument therefore depends on this “no substitution” assumption.
(D) Incorrect. This claims that phone-a-thon sign-ups are not more likely than other alumni to mentor regardless of contact method. But the argument doesn’t need that. Even if phone-a-thon recruits are especially predisposed to mentor, the conclusion could still be true so long as they would not sign up through other channels once the phone-a-thon is gone.
(E) Incorrect. This is a classic GMAT trap answer choice (brings a weaken argument to the assumption fight) and is one step removed from the argument. We are focusing on the mentors and this answer choice talks about channels that recruit these mentors, implying that perhaps something may happen, but as you will see, this "assumption" requires other assumptions to actually hold true, which disqualifies it. This option says other channels would not become significantly more effective if the phone-a-thon ended. But that is not sufficient by itself and therefore not required as some other channels could become more effective while yet other channels would become less effective and still the total might still fall by 400 if the 400 phone-a-thon would be mentors do not switch to those channels. Moreover, we do not know the total number of mentors - what if the total is 401? A more potent assumption would basically say that "Other cannels can become more effective enough to recruit additional 400 mentors". The argument above only needs to rule out substitution by those mentors, not improvements in outreach in general.
Answer: C
21 Feb 2026, 12:54
Kudos
Bookmarks
bb what is the source of this question?
I would like to argue that the way option E has been eliminated, in the same way option C could be eliminated. Let's say that all the 400 alumni sign up through other university outreach efforts if the phone-a-thon were discontinued. Even then in some universities the number of alumni might decrease, leading to a net result of decline of mentors by 400.
I would like to argue that the way option E has been eliminated, in the same way option C could be eliminated. Let's say that all the 400 alumni sign up through other university outreach efforts if the phone-a-thon were discontinued. Even then in some universities the number of alumni might decrease, leading to a net result of decline of mentors by 400.
