Assuming that plumbs is the underlined word, ignores would be the antonym
the answer is C. it shows an example of foreshadowing.
The answer is interrogative, as interrogative stems from the word interrogate, which is to ask. Judging by the tone of the sentence, I can infer that the missing punctuation at the end is a question mark, which hence leads to an interrogative sentence being the correct answer.
Option d us the correct answer