When chimpanzees become angry at other chimpanzees, they often engage

Question

When chimpanzees become angry at other chimpanzees, they often engage in what primatologists call "threat gestures": grunting, spitting, or making abrupt, upsweeping arm movements. Chimpanzees also sometimes attack other chimpanzees out of anger. However, when they do attack, they almost never take time to make threat gestures first. And, conversely, threat gestures are rarely followed by physical attacks.

Which one of the following, if true, most helps to explain the information about how often threat gestures are accompanied by physical attacks?

(A) Chimpanzees engage in threat gestures when they are angry in order to preserve or enhance social status.
(B) Making threat gestures helps chimpanzees vent aggressive feelings and thereby avoid physical aggression.
(C) Threat gestures and physical attacks are not the only means by which chimpanzees display aggression.
(D) Chimpanzees often respond to other chimpanzees' threat gestures with threat gestures of their own.
(E) The chimpanzees that most often make threat gestures are the ones that least often initiate physical attacks.

Source: LSAT

vaibhav1221 · Answer

A, D and E don't make sense. Between B and D, it was a bit hard for me to choose. I went in for B after re reading the stem and especially the last line. B, then, seemed to be the best answer choice.

Helium · Answer

Conclusion stated :

Chimpanzees when make angry 
gestures don't attack and if they attack then in that case that they don't make angry gestures before.

This is basically indirect strengthen/support the Conclusion question wherein we are looking for answer choice which explains the Conclusion of the argument stated.
 
A) Does not link angry gestures and physical attack - eliminate

B) Links angry gestures and physical attack - explains the Conclusion - Hold

C) Talks about aggression venting means in chimpanzees - eliminate

D)Does not link angry gestures and physical attack - eliminate

E)The chimpanzees that ......are the ones that ...

"that"- talks about specific chimpanzees - Doesn't help to explain the Conclusion

Posted from my mobile device

Helium · Answer

Conclusion stated :

Chimpanzees when make angry 
gestures don't attack and if they attack then in that case that they don't make angry gestures before.

This is basically indirect strengthen/support the Conclusion question wherein we are looking for answer choice which explains the Conclusion of the argument stated.
 
A) Does not link angry gestures and physical attack - eliminate

B) Links angry gestures and physical attack - explains the Conclusion - Hold

C) Talks about aggression venting means in chimpanzees - eliminate

D)Does not link angry gestures and physical attack - eliminate

E)The chimpanzees that ......are the ones that ...

"that"- talks about specific chimpanzees - Doesn't help to explain the Conclusion

Ans:B

Posted from my mobile device

Abhishek009 · Answer

We understand from the highlighted statement that -

Threat gestures = No Attack.

Among the given options only (B) states that Chimps avoid Physical attacks by using threat gestures, errors in other options highlighted.

GMATGuruNY · Answer

The correct answer must explain why an angry chimpanzee does not physically attack after making threat gestures.
Only B gives a valid reason:
 Making threat gestures helps chimpanzees vent aggressive feelings and thereby avoid physical aggression .
Here, chimpanzees use threat gestures to express aggressive feelings, eliminating the desire to attack physically.

B

desertEagle · Answer

I was confused between A B and E.

Kindly explain why B is correct and A and E are wrong.

Thanks

MartyTargetTestPrep · Answer

The correct answer must explain "the information about how often threat gestures are accompanied by physical attacks."

In other words, it must explain why threat gestures are "rarely followed by physical attacks."

(A) Chimpanzees engage in threat gestures when they are angry in order to preserve or enhance social status.

This choice explains why they engage in threat gestures but not why the gestures are not accompanied by physical attacks. After all, they could or could not have reasons to engage in physical attacks after making threat gestures to preserve or enhance social status.

(E) The chimpanzees that most often make threat gestures are the ones that least often initiate physical attacks.

This choice doesn't explain anything. Rather it presents a logical result of the fact stated by the passage that "threat gestures are rarely followed by physical attacks."

After reading this choice, we still don't know why that fact is the case.

(B) Making threat gestures helps chimpanzees vent aggressive feelings and thereby avoid physical aggression.

This choice helps to explain why threat gestures are rarely accompanied by physical attacks. Having made threat gestures, a chimp does not feel like engaging in physical attacks.

The correct answer is (B).

unraveled · Answer

When chimpanzees become angry at other chimpanzees, they often engage in what primatologists call "threat gestures": grunting, spitting, or making abrupt, upsweeping arm movements. Chimpanzees also sometimes attack other chimpanzees out of anger. However, when they do attack, they almost never take time to make threat gestures first. And, conversely, threat gestures are rarely followed by physical attacks.

Which one of the following, if true, most helps to explain the information about how often threat gestures are accompanied by physical attacks?

(A) Chimpanzees engage in threat gestures when they are angry  in order to preserve or enhance social status . - WRONG. May be true but htis doesn't help explain why they don't follow with attacks. The second aspect is not covered.
(B) Making threat gestures helps chimpanzees  vent aggressive feelings and thereby avoid physical aggression . - CORRECT. If they don't want to just vent the aggression than they just simply attack.
(C) Threat gestures and physical attacks are  not the only means by which chimpanzees display aggression . - WRONG. Misdirected and doesn't explains anything.
(D) Chimpanzees often  respond to other chimpanzees' threat gestures  with threat gestures of their own. - WRONG. Irrelevant. Nothing explained as in why chimpanzees make threat gestures but don't follow with attacks. 
(E) The  chimpanzees that most often make threat gestures  are the ones that least often initiate physical attacks. - WRONG. Limits the scope of chimpanzees covered in the passage, thereby, in a way, rather makes things more complex than explain.

Answer B.

When chimpanzees become angry at other chimpanzees, they often engage

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When chimpanzees become angry at other chimpanzees, they often engage

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