1. "They want the boots" is translated to quieren las botas. The answer to your question is D.
2. The closest in meaning to "prefiero la gorra roja I prefer the red cap. The answer to your question is B.
3. El cadejo is a mythical dog. The answer to your question is B.
4. In Honduras sawdust is used to make special carpets. The answer to your question is B.
I hope that this is the answer that you were looking for and it has helped you.