Which of these statements provides supporting evidence for the theme of man vs. nature in this part of the story?
a. “the old man's head was clear and good now and he was full of resolution.”
b. “he felt faint again now but he held on the great fish all the strain that he could.”
c. “i never had anything wrong with my heel except the time the sting ray stung it when i stepped on him when swimming and paralyzed the lower leg and made the unbearable pain."
d. “think about something cheerful, old man.”