Critical Reasoning Question

[thoughtcurry]

A recently published article on human physiology claims that enzyme K contributes to improved performance in strenuous activities such as weightlifting and sprinting. The article cites evidence of above-average levels of enzyme K in Olympic weightlifters and sprinters.

Which of the following if true, would most strengthen the article's conclusion?

(A) Enzyme K levels are the most important factor affecting the performance of strenuous activities.
(B) Enzyme K has no other function in the human body.
(C) Enzyme K is required for the performance of strenuous activities.
(D) Enzyme K helps weightlifters more than it helps sprinters.
(E) Strenuous activities do not cause the human body to produce unusually high levels of enzyme K.

Say wut??

[thebullfighter]

say A you chosed th wrong forum.

[thatchanon]

Yeap, wrong place

I think "E" is the answer

[thebullfighter]

got me confused now. will come later & re-think wth unbaised mind.

[mindgod]

C?
what is the Official Answer?

[KillBill]

Choice A for me.
Strengthen question - use of MOST in choice A which makes the argument more strengthen.
Whereas, I think Choice E goes as an assumption and not as strengthening choice.
What is Official Answer?

[Psyzygy]

E seems right to me... (it is an assumption but assumptions can strengthen an argument sometimes)
we can discount the fact that strenuous activities give rise to unusually high enzyme K levels --> we've removed an alternate explanation that could weaken the argument. --> from the stimulus we know enzyme K improves performance in strenuous activities therefore there must be some other reason for its existence

I'll admit A seems pretty good too.
What's the Official Answer?

[thebullfighter]

it's gotta be E only, i hd chosen A as i hd not read any of th other choices before. (as i thought A ws fine)

But then Q asks us "would most strengthen the article's conclusion"

[gmat168]

What's wrong with B?

[BuZZ]

E seems to set straight the chronology of a casual relation, if it exists.