Can someone help me ASAP !!

Harold gazed over at Jennifer in amazement. Not only had she
managed to find food on this tiny island, but she had devised a way to
capture and cook it! His stomach rumbled, but he could not show that
he depended on her. As the rain began to fall heavily on his exposed
head, Harold watched Jennifer cleverly twist palm leaves into a shelter.
Which statement best explains how the setting of this story on a deserted
island affects its plot?
A. It requires Harold and Jennifer to compete for the same scarce
resources

B. It allows the author to show how important teamwork is to
survival.

C. It provides both characters with a need to survive in an unforgiving
environment.

D. It hints at why Harold has so much trouble asking Jennifer for
help.