<p>The correct answer is <strong>(A) disappointing</strong>.</p>
<p style="">This sentence describes the levels to which the figures dropped, using an adjective to characterize these "levels."</p><p style="">(A) "disappointing" is an adjective, which is used here to describe the noun "levels." It indicates that the levels caused disappointment. The sentence reads correctly as: "The newly released movie showed good ticket sales at the box office in the first month, and then the figures quickly dropped to disappointing levels."</p><p style="">(B) "disappoint" is a verb, which doesn't work in this context because the sentence requires a descriptor (an adjective) for the noun "levels," not an action.</p><p style="">(C) "disappointment" is a noun, meaning the feeling of sadness or displeasure caused by the nonfulfillment of one's hopes or expectations. It doesn't fit here because the sentence needs an adjective, not another noun.</p><p style="">(D) "disappointed" is the past participle of the verb "disappoint" and is often used as an adjective. However, in this context, "disappointed" would imply that the "levels" themselves have the capacity for emotion, which is not logical. The term "disappointing" is more suitable because it describes the effect that the levels have on others (they cause disappointment).</p>