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Boho
Option C tells about possible Mutation of virus, so we do not know in the new state Virus pose any threat or not

(C) is correct IMO

At human body temperature, the influenza virus can remain infectious for approximately one week. Because the virus becomes inactive in the human body after one week, an infected person cannot be held responsible for any transmission of the virus after that time has elapsed.

The conclusion is most weakened by which of the following, if true?


(A) The influenza virus is sometimes confused with the unrelated gastroenteritis.

(B) The influenza vaccine is highly effective in preventing transmission of the influenza virus.

(C) Because the influenza virus mutates, a vaccine that is effective in preventing transmission of the virus one year may be ineffective a year later.

(D) The influenza virus can remain infectious for longer than a week at temperatures below that of the human body.

(E) Generally, those most susceptible to life-threatening illness as a result of the influenza virus are children, the elderly, and those with compromised immune systems.

This is wrong because we are not discussing vaccines in this question.

The question stem says that the virus becomes inactive after a week, thus an infected person cannot be held responsible for the transmission of the virus after a week.

A weakener here would be any information that tells us that an inactive virus can be transmitted after a week and/or can infect others. Option D mentions it explicitly.

Option D
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I think the answer choice C is the correct answer.
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Hi pussycat123 let me try to help

The correct answer is D here. Basically the argument has given information about human body temperature and concluded that it will inactive after a week so the infected person cannot be held responsible for transmission. Think about the possibility what if the virus didnt go after week because of some reason. Option C is doing nothing to tell us about the argument information.

Hope this helps


pussycat123
I think the answer choice C is the correct answer.
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I guess you could say that option C is out of scope ... but in no sense option D is a good option. I guess that's what GMAT is about. Thanks for explaining though
AbhishekP220108
Hi pussycat123 let me try to help

The correct answer is D here. Basically the argument has given information about human body temperature and concluded that it will inactive after a week so the infected person cannot be held responsible for transmission. Think about the possibility what if the virus didnt go after week because of some reason. Option C is doing nothing to tell us about the argument information.

Hope this helps



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