When logic gets questionable

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Here's a passage from the Toefl reading exrcise...It could seem straightforward at first but when you know the result it gets quite controversial, at least for me!



What do you think about the answer highlighted in black? I will not mention my answer and the correct one not to affect your response!

Have a good try...I'm nosy and willing to discuss with you about what is gonna come out!

Cheers

[zio_paperone]

I think the answer has to be found in "extreme sensitivity to initial conditions"

So I think A is the right one.

I think B is wrong because "chaotic" is a propriety of the system, and not a problem of our understanding.

[ViciousGoblin]

Well, according to the text, the (true) fact that weather is nonlinear cannot be invoked to assert that weather is chaotic -
since "Many (BUT NOT ALL) nonlinear systems exhibit chaotic behavior". So answer (C) should be wrong.
Also, if I correctly understand "made up", (A) should be wrong too, because "Despite their name, chaotic systems are not
completely random ... In a sense, many chaotic systems are 'predictably unpredicatable' ". The latter makes me think that
randomness cannot be taken as the founding notion for chaoticity.
For the same reason answer (D) is apparently wrong, as we have just seen that chaotic systems actually show some form of
order.
After reading the excerpt I would say that chaotic systems exhibit random features, which we are not able to explain/predict,
since we don't understand them fully (yet). If we knew them completely they would't be chaotic anymore.

In my opinion the correct answer is (B).

EDIT: After reading again the text I am a little confused by the fact that "the butterfly effect is the 'hallmark' of chaotic systems"
This makes me incline a little more towards answer A (which in my previous discussion was more or less assimilated to D) -
I confess that I am not sure to fully understand the meaning of A

[Camillo]

Very interesting question !
I don't think that highlighted answer is the correct one .
Give your interpretation !