D, because it characterizes that he feels wrong behind an Elf.
"<span>D. He fails to acknowledge the power of nature" is the fatal mistake that he makes, since he believes he has more time and resources than he actually does, and the cold overtakes him.</span>
Answer:
Complex sentences contain an independent clause and at least one dependent clause. An independent clause has the ability to stand alone as a sentence. It always makes a complete thought. A dependent clause cannot stand alone, even though it has a subject and a verb.
Explanation: