Last visit was: 27 Apr 2026, 07:57 It is currently 27 Apr 2026, 07:57
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
Bunuel
User avatar
Math Expert
Joined: 02 Sep 2009
Last visit: 27 Apr 2026
Posts: 109,928
Own Kudos:
811,560
 [5]
Given Kudos: 105,914
Products:
Expert
Expert reply
Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
Posts: 109,928
Kudos: 811,560
 [5]
Kudos
Add Kudos
5
Bookmarks
Bookmark this Post
Most Helpful Reply
User avatar
Bunuel
User avatar
Math Expert
Joined: 02 Sep 2009
Last visit: 27 Apr 2026
Posts: 109,928
Own Kudos:
811,560
 [3]
Given Kudos: 105,914
Products:
Expert
Expert reply
Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
Posts: 109,928
Kudos: 811,560
 [3]
1
Kudos
Add Kudos
2
Bookmarks
Bookmark this Post
General Discussion
User avatar
sumitkrocks
Joined: 02 Jul 2017
Last visit: 22 Aug 2023
Posts: 637
Own Kudos:
Given Kudos: 333
Location: India
Concentration: Strategy, Technology
GMAT 1: 730 Q50 V39
GMAT 2: 710 Q50 V36
Products:
GMAT 2: 710 Q50 V36
Posts: 637
Kudos: 879
Kudos
Add Kudos
Bookmarks
Bookmark this Post
User avatar
winterschool
User avatar
Verbal Chat Moderator
Joined: 20 Mar 2018
Last visit: 24 Apr 2026
Posts: 1,890
Own Kudos:
1,665
 [1]
Given Kudos: 1,681
Posts: 1,890
Kudos: 1,665
 [1]
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Unlike other species of the same family, which travel above the ground level by swinging from branches and vines, the Tyruvian flying monkey has a skin membrane connecting its limbs that allows it to glide from tree to tree. Based on the fact that the chief predator feeding on monkeys in Tyruvian jungles, the striped panther, cannot climb trees, researchers have hypothesized that the flying monkey population is continuously increasing in numbers while the populations of other species remain stable.

The researchers' conclusion relies on which of the following assumptions?


(A) The striped panther, being the most powerful of the Tyruvian jungle inhabitants, has extremely developed hindleg muscles which allow it to leap to a great height, although it rarely can reach the altitudes of the flying monkey's habitat. Incorrect

but there is possibility that striped panther can hut flying monkey and decrease its numbers

(B) The Tyruvian flying monkey's webbed limbs allow downward parachuting or even horizontal gliding but are not designed to enable it to soar upwards when fleeing from earthbound predators. Incorrect

weakens argment

(C) As opposed to some of the other species in its family that cannot avoid descending to the ground from time to time, the Tyruvian flying monkey subsists mostly on food sources that grow high above ground level and abundantly enough to sustain any number of such animals. Correct

no chance to hunt by striped panther, so its number must increase

(D) While the striped panther is too heavy or large-bodied to be able to safely climb trees around the habitats of Tyruvian flying monkeys, there are other predators who may prey on such monkeys. Incorrect

weakens argument

(E) Having skin between its limbs does not make the Tyruvian monkey any less nimble while leaping from tree to tree, but it does affect its ability to maneuver on the ground and climb trees quick enough so as to elude predators. Incorrect

weakens argument
User avatar
IanStewart
User avatar
GMAT Tutor
Joined: 24 Jun 2008
Last visit: 24 Apr 2026
Posts: 4,143
Own Kudos:
Given Kudos: 99
Expert
Expert reply
Posts: 4,143
Kudos: 11,282
Kudos
Add Kudos
Bookmarks
Bookmark this Post
I can guess the intended answer is C here; the conclusion distinguishes flying monkeys from other monkeys, and suggests flying monkey populations will grow, while other monkey populations will not, because flying monkeys are not vulnerable to panther predators, while, presumably, all the other monkeys are.

But all of the answers here are far too factually specific to be "assumptions". C is not an assumption. It's really just something that would, if true, make the conclusion more plausible. Answer C does not need to be true for the argument to be valid. We don't need to assume, for example, that the flying monkey feeds on things "high above ground level". If panthers can't climb trees, presumably food a few feet above ground level would be inaccessible to panthers. And we don't even need to assume flying monkeys feed on food above ground level at all. Provided they spend little time on the ground (just long enough to get food) while other monkeys spend lots of time on the ground, the flying monkey will be significantly less susceptible to predation than other monkeys. The conclusion still follows even if C is not true.
User avatar
Sumi1010
Joined: 21 Aug 2018
Last visit: 19 Jan 2025
Posts: 294
Own Kudos:
698
 [1]
Given Kudos: 20
Location: India
Posts: 294
Kudos: 698
 [1]
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Tyruvian flying monkey has some favor to glide from tree to tree, while other species of the same family swing from branches. The chief predator feeding on monkeys cannot climb on trees.
Conclusion : The flying monkey population is continuously increasing in numbers while the populations of other species remain stable.

The arguments needs multiple assumptions to stand with its conclusion.
1. The Tyruvian flying monkey mangages to save itself from the chief predator often (not just at the heights).
2. Tyruvian flying monkey population is not impacted by any other factor than the chief predator.
3. The chief predator does not consume other species.


Let's look at the choices now.

(A) The striped panther, being the most powerful of the Tyruvian jungle inhabitants, has extremely developed hindleg muscles which allow it to leap to a great height, although it rarely can reach the altitudes of the flying monkey's habitat.
The all that we know (need to know) is that the panther fails to catch the flying monkeys at height.
What else can it mange is futile.

(B) The Tyruvian flying monkey's webbed limbs allow downward parachuting or even horizontal gliding but are not designed to enable it to soar upwards when fleeing from earthbound predators.
This is something that can't be assumed for the given conclusion to hold.
(C) As opposed to some of the other species in its family that cannot avoid descending to the ground from time to time, the Tyruvian flying monkey subsists mostly on food sources that grow high above ground level and abundantly enough to sustain any number of such animals.
In-line with 1st assumption that the monkeys don't have to come down and hence chances for the predator is minimal.
(D) While the striped panther is too heavy or large-bodied to be able to safely climb trees around the habitats of Tyruvian flying monkeys, there are other predators who may prey on such monkeys.
This information actually weakens the argument.
(E) Having skin between its limbs does not make the Tyruvian monkey any less nimble while leaping from tree to tree, but it does affect its ability to maneuver on the ground and climb trees quick enough so as to elude predators.
The 1st part is an assumption(defensive), but 2nd part limits the movement of the monkey.
If so, it weakens the argument.


IMO C
User avatar
mSKR
Joined: 14 Aug 2019
Last visit: 10 Mar 2024
Posts: 1,210
Own Kudos:
960
 [1]
Given Kudos: 381
Location: Hong Kong
Concentration: Strategy, Marketing
GMAT 1: 650 Q49 V29
GPA: 3.81
GMAT 1: 650 Q49 V29
Posts: 1,210
Kudos: 960
 [1]
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Conclusion: flying monkey population is continuously increasing in numbers while the populations of other species remain stable.

B, D and E weakens the conclusion.
For assumption question, we need to find which option can strengthen the option.

A and C are shortlisted.
I choose C because C explains why T F monkeys increase but other monkeys need to go down and stay stable but not increase. A option doesn’t talk about the effect on other species.

Hence C is the correct answer.
User avatar
HarshaBujji
Joined: 29 Jun 2020
Last visit: 26 Apr 2026
Posts: 723
Own Kudos:
907
 [2]
Given Kudos: 247
Location: India
Products:
Posts: 723
Kudos: 907
 [2]
2
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Bunuel
Unlike other species of the same family, which travel above the ground level by swinging from branches and vines, the Tyruvian flying monkey has a skin membrane connecting its limbs that allows it to glide from tree to tree. Based on the fact that the chief predator feeding on monkeys in Tyruvian jungles, the striped panther, cannot climb trees, researchers have hypothesized that the flying monkey population is continuously increasing in numbers while the populations of other species remain stable.

The researchers' conclusion relies on which of the following assumptions?

(A) The striped panther, being the most powerful of the Tyruvian jungle inhabitants, has extremely developed hindleg muscles which allow it to leap to a great height, although it rarely can reach the altitudes of the flying monkey's habitat.
OFS, Irrelavent

(B) The Tyruvian flying monkey's webbed limbs allow downward parachuting or even horizontal gliding but are not designed to enable it to soar upwards when fleeing from earthbound predators.
OFS

(C) As opposed to some of the other species in its family that cannot avoid descending to the ground from time to time, the Tyruvian flying monkey subsists mostly on food sources that grow high above ground level and abundantly enough to sustain any number of such animals.
Yeah, If we negate this it will shatter the conclusion

Negated Stmt : Tyruanvain flying monkey cannot avoid descending to the ground from time to time.
Then it's the ability to fly has nothing to do with protecting it from predators as it mostly stays on the ground like all other species


(D) While the striped panther is too heavy or large-bodied to be able to safely climb trees around the habitats of Tyruvian flying monkeys, there are other predators who may prey on such monkeys.OFS, But this also weakens the reasoning.

(E) Having skin between its limbs does not make the Tyruvian monkey any less nimble while leaping from tree to tree, but it does affect its ability to maneuver on the ground and climb trees quick enough so as to elude predators.OFS, Irrelavent

IMO C
User avatar
princevora
Joined: 08 Apr 2024
Last visit: 21 Oct 2025
Posts: 11
Given Kudos: 79
Posts: 11
Kudos: 0
Kudos
Add Kudos
Bookmarks
Bookmark this Post
the conclusion distinguishes flying monkeys from other monkeys, and suggests flying monkey populations will grow, while other monkey populations will not, because flying monkeys are not vulnerable to panther predators, while, presumably, all the other monkeys are. but what if there is another predator who will kill them, then the population will not grow and thus conclusion falls apart. so why is C a better answer then D.
Moderators:
GMAT Club Verbal Expert
7390 posts
507 posts
361 posts