The answer is definitely D, because it contains two independent clauses that are joined together without a comma or conjunction. (An independent clause just means a chunk of language that has both a subject and a verb and could be a complete sentence on its own.)
The correct answer is letter A (lamented). This is so because the blank comes immediately after the subject of the sentence, which means that a verb is needed to define the action or state.
True
I hope that this helps
Answer: I can't see the sentence but detractor means someone who disparages or belittles the worth something.