In Paragraph 37 of Jack London's "To Build a Fire,"
why does the man stop
running?
A. He trips and falls into the river.
B. He is too tired to run and decides to die
in his sleep.
C. He slows down so his dog can catch up
to him.

B. He is too tired to run and decides to die  in his sleep.

Explanation:

In ''To Build a Fire'' a man is traveling in the Yukon in very cold weather with a dog. He attempts to build a fire multiple times but fails each time as the cold and snow snuff it out.

When he predicts that he was nearing death as the cold got worse, he decided to start running in order to get blood circulating around his body but it is too cold and he is too tired so his endurance fails him and he stops running. He now accepts that his death and meets it with perceived dignity by deciding to fall asleep and die from there.

are their choices tho?

the answer is b. the tomb is underground and dark, and its opening is covered by a heavy grate.