Answer:
The details from "The Oasis: Africa" best support the central idea that nature can be severe and unkind are "For eight weary days we had crawled across the burning desert."
Explanation:
The sentence "The Oasis: Africa" best support the central idea that nature can be severe and unkind are "For eight weary days we had crawled across the burning desert." is the only one that talks about natural elements and how harmful they can be to humans, the other options talk about poverty and consequences of it.
They are all about the same topic. And they use something else as an example of transformation... thus making it an analogy, or a metaphor.
Answer:
I totally agree with u! The story was great and the theme u stated as "the best statement" goes with the story so well!