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Let's analyze the zoologist’s argument:
Conclusion: Elephants are more motivated to care for members of their own herd than for other elephants.

Evidence: Elephants spent more time near an enclosure containing a distressed calf from their own herd than near an enclosure containing a calf from another herd.

To strengthen the argument, we want to rule out alternative explanations and show that the increased time spent at the herd-calf enclosure is due to the elephants’ motivation to care for their own — not just curiosity, randomness, or proximity.

Option-by-option analysis:
A. “they were encouraged by a familiar zookeeper...”
-> Irrelevant. The argument is about elephant behavior toward calves, not about the influence of zookeepers.

B. “they spent more time at the empty enclosure than at the different-herd calf enclosure”
-> This would actually weaken the conclusion, suggesting that the elephants may not be motivated by herd affiliation but possibly avoiding other calves.

C. “they spent more time at the enclosure when the herd calf was inside than when it was visible but outside”
-> This strengthens the argument: it shows that the elephants’ behavior is specific to the situation where the calf is distressed and in need of care, not just visual recognition or familiarity. Their motivation increases when the calf is enclosed and distressed — suggesting intent to care.

D. “the distressed calf was interested in the elephants”
-> This shifts the focus to the calf’s behavior rather than the elephants’. It doesn’t strengthen the claim about elephant motivation.

E. “the distressed calf from a different herd appeared friendly or hostile”
-> Again, this focuses on the calf’s behavior, not the elephants’. Also, it doesn’t clarify whether elephant motivation to care is based on herd affiliation.

Final Answer: C
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Answer: B

B. the enclosure was empty than when the enclosure contained a distressed calf from a different herd
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(A) Talks about zookeepers — not relevant
(B) Says elephants preferred an empty cage over a non-herd baby — confusing, not helpful
(C) Elephants stayed longer when their herd’s baby was inside the enclosure than just visible outside — shows they wanted to help
(D) Talks about the baby’s reaction — not the elephant’s motivation
(E) Also focuses on the baby’s behavior, not helpful



Bunuel
Zoologist: As part of an experiment, several mature elephants were led to three enclosures- one that contained a distressed calf from the elephant’s herd, one that contained a distressed calf from a different herd, and one that was empty. It was observed that in the majority of cases, the elephants spent more time at enclosures with the calf from their herd than they did at enclosures with the calf from a different herd. This suggests that elephants are more motivated to care for members of their herd than for other elephants.

The zoologist's argument would be most strengthened if it were true that, in the experiment, the elephants led to the enclosures tended to spend more time at the enclosures when

A. they were encouraged by a familiar zookeeper than when they were encouraged by an unfamiliar zookeeper
B. the enclosure was empty than when the enclosure contained a distressed calf from a different herd
C. a distressed calf from the elephants’ herd was in the enclosure than when a distressed calf from the elephants’ herd was visible but outside the enclosure
D. a distressed calf in the enclosure appeared interested in the approaching elephants than when the calf ignored them
E. a distressed calf from a different herd appeared friendly toward elephants than when a distressed calf from a different herd displayed hostility


 


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Zoologist: As part of an experiment, several mature elephants were led to three enclosures- one that contained a distressed calf from the elephant’s herd, one that contained a distressed calf from a different herd, and one that was empty. It was observed that in the majority of cases, the elephants spent more time at enclosures with the calf from their herd than they did at enclosures with the calf from a different herd. This suggests that elephants are more motivated to care for members of their herd than for other elephants.

A. they were encouraged by a familiar zookeeper than when they were encouraged by an unfamiliar zookeeper Irrelevant, not discussing zookeeper familiarity
B. the enclosure was empty than when the enclosure contained a distressed calf from a different herd Irrelevant, considering the calf from same and different herds not empty vs differnt herd calf scenario
C. a distressed calf from the elephants’ herd was in the enclosure than when a distressed calf from the elephants’ herd was visible but outside the enclosure This makes sense. It suggests that elephants spent more time in the enclosure because distressed call from the same herd calf was there and not outside
D. a distressed calf in the enclosure appeared interested in the approaching elephants than when the calf ignored them Irrelevant, not considering the calf behviour
E. a distressed calf from a different herd appeared friendly toward elephants than when a distressed calf from a different herd displayed hostility [color=#e82a1f]Irrelevant, not considering the calf behviour[/color]

Bunuel
Zoologist: As part of an experiment, several mature elephants were led to three enclosures- one that contained a distressed calf from the elephant’s herd, one that contained a distressed calf from a different herd, and one that was empty. It was observed that in the majority of cases, the elephants spent more time at enclosures with the calf from their herd than they did at enclosures with the calf from a different herd. This suggests that elephants are more motivated to care for members of their herd than for other elephants.

The zoologist's argument would be most strengthened if it were true that, in the experiment, the elephants led to the enclosures tended to spend more time at the enclosures when

A. they were encouraged by a familiar zookeeper than when they were encouraged by an unfamiliar zookeeper
B. the enclosure was empty than when the enclosure contained a distressed calf from a different herd
C. a distressed calf from the elephants’ herd was in the enclosure than when a distressed calf from the elephants’ herd was visible but outside the enclosure
D. a distressed calf in the enclosure appeared interested in the approaching elephants than when the calf ignored them
E. a distressed calf from a different herd appeared friendly toward elephants than when a distressed calf from a different herd displayed hostility


 


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We want to strengthen the most.

A) This could weekens the argument. Focus on the zookeeper than the elephants
B) This could slightly strengthen the argument as they care even less about the calf from other herd
C) They could spend less time in it because the elephant is outside. Neither
D) Weekends argument. Shows its the calfs doing
E) Weakens argument. Shows its the calfs doing

Best guess- B
Bunuel
Zoologist: As part of an experiment, several mature elephants were led to three enclosures- one that contained a distressed calf from the elephant’s herd, one that contained a distressed calf from a different herd, and one that was empty. It was observed that in the majority of cases, the elephants spent more time at enclosures with the calf from their herd than they did at enclosures with the calf from a different herd. This suggests that elephants are more motivated to care for members of their herd than for other elephants.

The zoologist's argument would be most strengthened if it were true that, in the experiment, the elephants led to the enclosures tended to spend more time at the enclosures when

A. they were encouraged by a familiar zookeeper than when they were encouraged by an unfamiliar zookeeper
B. the enclosure was empty than when the enclosure contained a distressed calf from a different herd
C. a distressed calf from the elephants’ herd was in the enclosure than when a distressed calf from the elephants’ herd was visible but outside the enclosure
D. a distressed calf in the enclosure appeared interested in the approaching elephants than when the calf ignored them
E. a distressed calf from a different herd appeared friendly toward elephants than when a distressed calf from a different herd displayed hostility


 


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From all the options, Option C directly addresses whether the presence and accessibility of the distressed calf from their own herd influences their time spent. If they spend more time when the calf is in the enclosure (allowing for potential direct care or comfort) compared to just being visible, it strengthens the interpretation that their motivation is indeed related to providing care or comfort to that specific distressed individual. It helps rule out the possibility that they are merely curious or just responding to the sight of a herd member. Instead, it suggests a desire for closer proximity or interaction, consistent with "care."
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Premise: Elephants spent more time at enclosures with calves from their own herd than at enclosures with calves from different herds.
Conclusion: Elephants are more motivated to care for members of their herd than for other elephants.
The key issue here is whether the elephants' behavior (spending more time) truly indicates a motivation to care for their own herd members specifically, rather than being caused by some other factor.
Let's evaluate each answer choice:
A) Whether the zookeeper is familiar or unfamiliar doesn't help establish that the elephants' behavior is motivated by caring for their herd members specifically.
B) If elephants spent more time at empty enclosures than at enclosures with calves from different herds, this would actually weaken the argument by suggesting elephants might avoid non-herd calves altogether.
C) This strengthens the argument significantly. If elephants spend more time with distressed calves from their herd when the calves are in the enclosure (where they can provide direct care) versus when they're merely visible outside the englosure, this suggests the elephants are specifically motivated to provide care, not just to be near familiar calves.
D) This introduces an alternative explanation - that elephants might spend more time with calves that show interest in them, regardless of herd membership - which doesn't strengthen the specific conclusion about caring for herd members.
E) This suggests that the elephants' behavior might be influenced by the calves' friendliness rather than herd membership, which doesn't strengthen the argument.
The correct answer is C. It strengthens the argument by showing that the elephants' behavior is specifically motivated by providing care to herd members, not just proximity or recognition.
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The paragraph clearly states that elephants are more familiar with distressed calf from their own herd than different herd. This states that they are familiar with own members. So the answer will be point A , as they will be encouraged with a familiar zookeeper than an unknown. Point B states of empty space which is unknown , point C is not applicable as elephants will be interested in calf from their herd whether it is inside or outside the enclosure , Point D and E they will not be friendly with other herd even if they are approaching .So, it will be Point A , as they will be familiar in their own community .
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Information given:
- Elephants in an experiment spend more time at an enclosure containing a distressed calf from their own herd vs. a different herd or an empty pen
- Conclusion: elephants are more motivated to care for members of their herd than for other elephants

Question:
- The zoologist's argument would be most strengthened if it were true that, in the experiment, the elephants led to the enclosures tended to spend more time at the enclosures when

Solution:
- A: They were encouraged by a familiar zookeeper than when they were encouraged by an unfamiliar zookeeper
- No link to calves or motivation to help herd members
- Does not strengthen argument

- B: The enclosure was empty than when the enclosure contained a distressed calf from a different herd
- Suggests the distressed calf from a different herd might be less interesting than an empty pen
- Does not strengthen argument

- C: Distressed calf from the elephants’ herd was in the enclosure than when a distressed calf from the elephants’ herd was visible but outside the enclosure
- Shows the time spent in enclosure is not just due to seeing the calf, but rather actively approaching to care for it
- Suggests behavior (time spent) is motivated by concern, not just curiosity
- Strengthens the argument

- D: A distressed calf in the enclosure appeared interested in the approaching elephants than when the calf ignored them
- This is about the calf's behavior, not the adult elephant's motivation
- Does not strengthen the argument

- E: a distressed calf from a different herd appeared friendly toward elephants than when a distressed calf from a different herd displayed hostility
- Suggests behavior of the different herd calf can very, but the argument is about the elephants' motivation to care for their own
- Does not strengthen the argument

Answer: C, a distressed calf from the elephants’ herd was in the enclosure than when a distressed calf from the elephants’ herd was visible but outside the enclosure
Bunuel
Zoologist: As part of an experiment, several mature elephants were led to three enclosures- one that contained a distressed calf from the elephant’s herd, one that contained a distressed calf from a different herd, and one that was empty. It was observed that in the majority of cases, the elephants spent more time at enclosures with the calf from their herd than they did at enclosures with the calf from a different herd. This suggests that elephants are more motivated to care for members of their herd than for other elephants.

The zoologist's argument would be most strengthened if it were true that, in the experiment, the elephants led to the enclosures tended to spend more time at the enclosures when

A. they were encouraged by a familiar zookeeper than when they were encouraged by an unfamiliar zookeeper
B. the enclosure was empty than when the enclosure contained a distressed calf from a different herd
C. a distressed calf from the elephants’ herd was in the enclosure than when a distressed calf from the elephants’ herd was visible but outside the enclosure
D. a distressed calf in the enclosure appeared interested in the approaching elephants than when the calf ignored them
E. a distressed calf from a different herd appeared friendly toward elephants than when a distressed calf from a different herd displayed hostility


 


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Bunuel
Zoologist: As part of an experiment, several mature elephants were led to three enclosures- one that contained a distressed calf from the elephant’s herd, one that contained a distressed calf from a different herd, and one that was empty. It was observed that in the majority of cases, the elephants spent more time at enclosures with the calf from their herd than they did at enclosures with the calf from a different herd. This suggests that elephants are more motivated to care for members of their herd than for other elephants.

The zoologist's argument would be most strengthened if it were true that, in the experiment, the elephants led to the enclosures tended to spend more time at the enclosures when

A. they were encouraged by a familiar zookeeper than when they were encouraged by an unfamiliar zookeeper
B. the enclosure was empty than when the enclosure contained a distressed calf from a different herd
C. a distressed calf from the elephants’ herd was in the enclosure than when a distressed calf from the elephants’ herd was visible but outside the enclosure
D. a distressed calf in the enclosure appeared interested in the approaching elephants than when the calf ignored them
E. a distressed calf from a different herd appeared friendly toward elephants than when a distressed calf from a different herd displayed hostility


 


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A. Zookeepers are unrelated to herds or calves, Reject
B. If they pick both empty enclosures and enclosures with their own members over the enclosure with a different herd, then it shows that they prioritize caring for members of other herds the lowest, this strengthens the argument. Keep
C. The elephants should spend time equally with both, otherwise this doesn't strengthen the argument, rejected
D. Calf behaviour is unrelated, rejected.
E. Same as D, rejected
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Initially, I was confused between C & E but after taking so much of time. I finally concluded C is the answer. Here is my reason



C. a distressed calf from the elephants’ herd was in the enclosure than when a distressed calf from the elephants’ herd was visible but outside the enclosure. This directly supports the idea that the elephants are motivated by the presence and accessibility of their own distressed calf. If they spend more time when the calf is in the enclosure (and thus potentially able to be cared for or interacted with) compared to just seeing it outside, it reinforces that their motivation is driven by the potential for direct care or interaction with their own herd member. This strengthens the link between the distress of their own calf and the time spent.

E. a distressed calf from a different herd appeared friendly toward elephants than when a distressed calf from a different herd displayed hostility. This focuses on the other herd's calf's demeanor. While friendliness might increase time spent, and hostility decrease it, it doesn't directly strengthen the preference for their own herd or the motivation to care for their own. The argument is about motivation to care, which typically arises from distress, not friendliness.
Bunuel
Zoologist: As part of an experiment, several mature elephants were led to three enclosures- one that contained a distressed calf from the elephant’s herd, one that contained a distressed calf from a different herd, and one that was empty. It was observed that in the majority of cases, the elephants spent more time at enclosures with the calf from their herd than they did at enclosures with the calf from a different herd. This suggests that elephants are more motivated to care for members of their herd than for other elephants.

The zoologist's argument would be most strengthened if it were true that, in the experiment, the elephants led to the enclosures tended to spend more time at the enclosures when

A. they were encouraged by a familiar zookeeper than when they were encouraged by an unfamiliar zookeeper
B. the enclosure was empty than when the enclosure contained a distressed calf from a different herd
C. a distressed calf from the elephants’ herd was in the enclosure than when a distressed calf from the elephants’ herd was visible but outside the enclosure
D. a distressed calf in the enclosure appeared interested in the approaching elephants than when the calf ignored them
E. a distressed calf from a different herd appeared friendly toward elephants than when a distressed calf from a different herd displayed hostility


 


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Zoologist: As part of an experiment, several mature elephants were led to three enclosures- one that contained a distressed calf from the elephant’s herd, one that contained a distressed calf from a different herd, and one that was empty. It was observed that in the majority of cases, the elephants spent more time at enclosures with the calf from their herd than they did at enclosures with the calf from a different herd. This suggests that elephants are more motivated to care for members of their herd than for other elephants.

The zoologist's argument would be most strengthened if it were true that, in the experiment, the elephants led to the enclosures tended to spend more time at the enclosures when

A. they were encouraged by a familiar zookeeper than when they were encouraged by an unfamiliar zookeeper => zookeper and their roles are not mentioned and we don't know their impact so even when they are familiar or not it does not affect the statement or conclusion as such. so not the ans
B. the enclosure was empty than when the enclosure contained a distressed calf from a different herd => here other two enclosure are compared but again they don't have affect on the closure with calf of same herd so not ans
C. a distressed calf from the elephants’ herd was in the enclosure than when a distressed calf from the elephants’ herd was visible but outside the enclosure => this clearly says that elephant prefered to stay with calf from their herd even when they had view of other calf so this clearly strengthen the conclusion so This is the Ans
D. a distressed calf in the enclosure appeared interested in the approaching elephants than when the calf ignored them => whether calf was interested or not . its emptions are not important what matters is elephants motivation whether it was interested or not. so not the Ans
E. a distressed calf from a different herd appeared friendly toward elephants than when a distressed calf from a different herd displayed hostility => Again the the behavior of calf is not adding any impact on whether the elephants were motivated or not. so not the ans

So Ans C
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argument :
Zoologist: As part of an experiment, several mature elephants were led to three enclosures
case 1 : one that contained a distressed calf from the elephant’s herd
case 2 : one that contained a distressed calf from a different herd
case 3 : one that was empty

conclusion :
it was observed that in the majority of cases, the elephants spent more time at enclosures with the calf from their herd than they did at enclosures with the calf from a different herd. This suggests that elephants are more motivated to care for members of their herd than for other elephants.

zoologist's argument would be most strengthened if it were true that, in the experiment, the elephants led to the enclosures tended to spend more time at the enclosures when

A. they were encouraged by a familiar zookeeper than when they were encouraged by an unfamiliar zookeeper ; this strengthens the conclusion
B. the enclosure was empty than when the enclosure contained a distressed calf from a different herd ; the option does not strengthen the conclusion
C. a distressed calf from the elephants’ herd was in the enclosure than when a distressed calf from the elephants’ herd was visible but outside the enclosure; the option does not strengthen the argument
D. a distressed calf in the enclosure appeared interested in the approaching elephants than when the calf ignored them ; it will weaken the conclusion
E. a distressed calf from a different herd appeared friendly toward elephants than when a distressed calf from a different herd displayed hostility ; same as option D weaken the conclusion here

OPTION A is correct
Bunuel
Zoologist: As part of an experiment, several mature elephants were led to three enclosures- one that contained a distressed calf from the elephant’s herd, one that contained a distressed calf from a different herd, and one that was empty. It was observed that in the majority of cases, the elephants spent more time at enclosures with the calf from their herd than they did at enclosures with the calf from a different herd. This suggests that elephants are more motivated to care for members of their herd than for other elephants.

The zoologist's argument would be most strengthened if it were true that, in the experiment, the elephants led to the enclosures tended to spend more time at the enclosures when

A. they were encouraged by a familiar zookeeper than when they were encouraged by an unfamiliar zookeeper
B. the enclosure was empty than when the enclosure contained a distressed calf from a different herd
C. a distressed calf from the elephants’ herd was in the enclosure than when a distressed calf from the elephants’ herd was visible but outside the enclosure
D. a distressed calf in the enclosure appeared interested in the approaching elephants than when the calf ignored them
E. a distressed calf from a different herd appeared friendly toward elephants than when a distressed calf from a different herd displayed hostility


 


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The zoologist concludes that elephants are more motivated to care for members of their own herd based on how much time they spent near certain enclosures. To strengthen this argument, we need evidence that specifically links herd affiliation to the elephants’ behavior—showing that their preference for certain enclosures is due to concern for their own herd’s calves, not just interest or curiosity. Option A is about the zookeeper’s familiarity, which is unrelated to herd motivation. Option B would actually weaken the argument, as spending more time at an empty enclosure than with an unrelated calf would suggest other factors at play. Option D and E introduce the calf's behavior (interest, friendliness, hostility), which shifts focus away from the elephants’ motivation and toward the calf's influence. Only Option C directly supports the idea that elephants are particularly motivated to care for calves from their own herd: if they spend more time when that calf is in the enclosure versus just visible, it shows a purposeful action to engage with and possibly care for their own herd member. Thus, C most strongly strengthens the argument.

Bunuel
Zoologist: As part of an experiment, several mature elephants were led to three enclosures- one that contained a distressed calf from the elephant’s herd, one that contained a distressed calf from a different herd, and one that was empty. It was observed that in the majority of cases, the elephants spent more time at enclosures with the calf from their herd than they did at enclosures with the calf from a different herd. This suggests that elephants are more motivated to care for members of their herd than for other elephants.

The zoologist's argument would be most strengthened if it were true that, in the experiment, the elephants led to the enclosures tended to spend more time at the enclosures when

A. they were encouraged by a familiar zookeeper than when they were encouraged by an unfamiliar zookeeper
B. the enclosure was empty than when the enclosure contained a distressed calf from a different herd
C. a distressed calf from the elephants’ herd was in the enclosure than when a distressed calf from the elephants’ herd was visible but outside the enclosure
D. a distressed calf in the enclosure appeared interested in the approaching elephants than when the calf ignored them
E. a distressed calf from a different herd appeared friendly toward elephants than when a distressed calf from a different herd displayed hostility


 


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Premise: Elephants spent more time near distressed calves from their herd.

Conclusion: Therefore, elephants are more motivated to care for herd members.

Strengthener (C): Shows that proximity increases when the herd calf is in distress and accessible, suggesting intent to care — not just coincidence.
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A - This weakens as it mentions that it was not the calf but the zookeeper
B - This weakens as it states that irrespective if the calf is present then then enclosure would happen
C - This clearly states that more care is provided to family members
D - This weakens as it says that enclosure depends on calf behaviour
E - This weakens too as it talks about calf behaviour.

So c is the answer
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  • The key observation is: "Elephants spent more time at the enclosure with a herd calf than at the one with a non-herd calf."
  • A rival explanation could be that elephants aren’t especially interested in any distressed calf—they just happen to linger at one enclosure (say, because it’s quieter, or because they’re avoiding all calves).
  • To strengthen the argument that they are selectively motivated to tend their calf, we’d want to see that they not only prefer their own calf over another herd’s calf, but that they would even rather stand in front of an empty pen than in front of a non-herd calf.
That exact scenario is described in choice B:


--> B. The elephants spent more time at the empty enclosure than at the enclosure containing a distressed calf from a different herd.

If the animals actually avoid a non-herd calf so much that they’d prefer to stand by an empty pen, that makes the contrast with “spending still more time” at their calf’s pen all the more striking—and leaves herd-membership as the most plausible driver of their behavior.
None of the other options isolate herd-membership in this way:
  • A brings in the zookeeper’s familiarity (irrelevant to herd vs. non-herd calves).
  • C compares “inside vs. outside” positions for a herd calf (says nothing about their reaction to non-herd calves).
  • D and E hinge on calf friendliness/interest or hostility—introducing social cues rather than herd-membership per se.
Thus B most directly strengthens the zoologist’s conclusion.
Bunuel
Zoologist: As part of an experiment, several mature elephants were led to three enclosures- one that contained a distressed calf from the elephant’s herd, one that contained a distressed calf from a different herd, and one that was empty. It was observed that in the majority of cases, the elephants spent more time at enclosures with the calf from their herd than they did at enclosures with the calf from a different herd. This suggests that elephants are more motivated to care for members of their herd than for other elephants.

The zoologist's argument would be most strengthened if it were true that, in the experiment, the elephants led to the enclosures tended to spend more time at the enclosures when

A. they were encouraged by a familiar zookeeper than when they were encouraged by an unfamiliar zookeeper
B. the enclosure was empty than when the enclosure contained a distressed calf from a different herd
C. a distressed calf from the elephants’ herd was in the enclosure than when a distressed calf from the elephants’ herd was visible but outside the enclosure
D. a distressed calf in the enclosure appeared interested in the approaching elephants than when the calf ignored them
E. a distressed calf from a different herd appeared friendly toward elephants than when a distressed calf from a different herd displayed hostility


 


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