Correct Answer: C

Your Answer:

Explanation

C

This is a Vocabulary question, as it's asking for a logical and precise word or phrase for the blank. Read the text and highlight what can help fill in the blank. In regard to recycling used car tires, the text states potentially reusing them would be beneficial and that walls made of used tires and dirt are structurally robust, or strong. A good word for the annotation box based on this information would be that the author considers the possibility of recycling used car tires as building materials to be "promising."

• (A) and (B) are wrong because both derivative and ludicrous are negative words that are the Opposite tone of "promising."

• (C) is correct because auspicious matches with "promising."

• (D) is wrong because innovative is a Could Be True trap answer: the text doesn't actually say reusing tires as the text describes would be a new idea or has not been done before.