Critical Reasoning (CR) | Re: #Top150 CR: The noise caused by airplanes during takeoff and landing

let us understand this as aboy who is not only intelligent (is in bold face) but also naughty. Teacher is saying that boy is naughty but also very intelligent. So rather than dismissal from school , impose a fine whenever he makes nuisance.

I will clarify doubt between D and A answer choices-
D says It undermines the argument advocating a system of regulations and fines for the unreasonable operation of an airport.
means- boldface is actually in support of fine because inspite of dismissal from
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