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rungtamehul
Joined: 03 Aug 2025
Last visit: 15 Aug 2026
Posts: 26
Given Kudos: 195
Location: India
Concentration: General Management, Strategy
Schools: ISB HEC Sept '27 INSEAD Aug '27
GMAT Focus 1: 705 Q88 V85 DI82 
GPA: 7.8
08 Jul 2026, 23:10
Kudos
Bookmarks
There are 2 different hypothesis given in the argument
H1: Pebbles function as a grinding tool to crack seeds
H2: Pebbles functon as to reinforce walls of the nests tunnels
Now lest look at the options, keeping in mind that the additional information should help us discard one hypothesis and strengthen the other
Option A: Pebbles can wear for many reasons including both the hypotheses mentioned in the passage, the information is useless for us to narrow down on one hypothesis. Eliminate
Option B: It tells us nothing as to what the pebbles are used for by the ants. Option is Out of Scope. Eliminate
Option C: Pebbles in brood rearing chambers can be used for grinding or reinforcement or for some other reason not mentioned. It does not help us definitively isolate one hypothesis.
Option D: Nutritional value of the seeds is irrelevant in this case. Eliminate
Option E: It tells us that even though tunnel collapse is not a concern, the ants carry the pebbles. This indicates H2 is not the case but H1. This is the right answer
H1: Pebbles function as a grinding tool to crack seeds
H2: Pebbles functon as to reinforce walls of the nests tunnels
Now lest look at the options, keeping in mind that the additional information should help us discard one hypothesis and strengthen the other
Option A: Pebbles can wear for many reasons including both the hypotheses mentioned in the passage, the information is useless for us to narrow down on one hypothesis. Eliminate
Option B: It tells us nothing as to what the pebbles are used for by the ants. Option is Out of Scope. Eliminate
Option C: Pebbles in brood rearing chambers can be used for grinding or reinforcement or for some other reason not mentioned. It does not help us definitively isolate one hypothesis.
Option D: Nutritional value of the seeds is irrelevant in this case. Eliminate
Option E: It tells us that even though tunnel collapse is not a concern, the ants carry the pebbles. This indicates H2 is not the case but H1. This is the right answer
Bunuel
08 Jul 2026, 23:18
Kudos
Bookmarks
I got option E as an answer ,,
----- Harvest ant observed ..... interior ---- there are two hypothesis !!
------ now ,, Option a is kind of not definitive ,, Option B talks about what other species trying to do in other region that is nothing to delete it with this so it is completely ||out of scope || , option C if its proven right ,, then it leaves us confused so its a trap ,, option D It's a kind of nutritious value trap Not gives us any information about Pebbles to crack them .
----- so here option E ,, if this is yes then One of the hypothesis is destroyed another one got properly supported (structural hypothis got eliminated and grinding wins )And if it is no Then it happens in other way (Structural hypothesis got wins and grinding eliminated )
That's how I got option E if you have any better explanation feel free to tag me
----- Harvest ant observed ..... interior ---- there are two hypothesis !!
------ now ,, Option a is kind of not definitive ,, Option B talks about what other species trying to do in other region that is nothing to delete it with this so it is completely ||out of scope || , option C if its proven right ,, then it leaves us confused so its a trap ,, option D It's a kind of nutritious value trap Not gives us any information about Pebbles to crack them .
----- so here option E ,, if this is yes then One of the hypothesis is destroyed another one got properly supported (structural hypothis got eliminated and grinding wins )And if it is no Then it happens in other way (Structural hypothesis got wins and grinding eliminated )
That's how I got option E if you have any better explanation feel free to tag me
08 Jul 2026, 23:28
Kudos
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biologist studying the species of harvester ant.
they observed that workers regularly transport small pebbles from soil surface into the nest interior.
ants primarily rely on seeds but their mandibles are too weak to crack the shells of the hardest seeds available in their habitat.
now two function of pebbles:
1= pebbles may function as grinding tool, helping workers process seeds that their mandibles cant crack.
2= the pebbles may serve to reinforce the walls of the nests tunnels, which are prone to collapse in loose soil.
A wrong comparison here. in this case they can still rub the pebbles against the walls or for cracking. so not definite ans, out.
B this is wrong comparison here. not concerned about the other harvester ant species. out.
C this talks about where exactly pebbles are deposited but thats not we are concerned about though. out.
D this talks about nutrients in hard shelled seeds. but thats not the real issue. out.
E if in the ans in stable species still bringing in pebbles that means they are using it for cracking seeds. but if they are not bringing it then they only need seeds to protect walls and not for seed cracking. so keep.
choice E
they observed that workers regularly transport small pebbles from soil surface into the nest interior.
ants primarily rely on seeds but their mandibles are too weak to crack the shells of the hardest seeds available in their habitat.
now two function of pebbles:
1= pebbles may function as grinding tool, helping workers process seeds that their mandibles cant crack.
2= the pebbles may serve to reinforce the walls of the nests tunnels, which are prone to collapse in loose soil.
A wrong comparison here. in this case they can still rub the pebbles against the walls or for cracking. so not definite ans, out.
B this is wrong comparison here. not concerned about the other harvester ant species. out.
C this talks about where exactly pebbles are deposited but thats not we are concerned about though. out.
D this talks about nutrients in hard shelled seeds. but thats not the real issue. out.
E if in the ans in stable species still bringing in pebbles that means they are using it for cracking seeds. but if they are not bringing it then they only need seeds to protect walls and not for seed cracking. so keep.
choice E
Bunuel
