Which theme is most likely to be inferred from a story that is focused on an external conflict? Humans are vulnerable to the forces of nature.
Low self-confidence is an obstacle to success.
Personal flaws often have a root in childhood.
Greed can defeat a person like no other vice.

(A).  Humans are vulnerable to the forces of nature.

Explanation:

thick as the foliage of the waving wood; the figurative language that is used here is referring to a battle. there are two mountains that are facing opposite of each other, and they have armies better stick like a forest.