Tone in literary nonfiction refers to character's attitude or feelings.
From text:
Something stopped him. It was as if a cloud covered the sun, but worse. Light faded. Sound and color drained away. A cold, heavy presence<span> passed over the beach, slowing time, dropping the temperature to freezing, and making me feel like life was hopeless, fighting was useless. </span>
Answer: Life
Explanation: heres the depression hotline number 800-273-8255
The answer is B. posterior. This means "behind".