In the paragraph, the words resident and inhabitants are synonyms, words that have the same meaning (in that case it means <em>someone that lives in X place, ) </em>and that can be interchanged when you are writing as a way for not repeating the same word twice.
As for the options, the last phrase contains two synonyms as well, the words shelter and refuge. Both words means <em>a place where one is protected; </em>in that case, protected from the rain and wind.
I'm sorry if this sounds rude but it is obviously choice A. your question is how much Addison has left. all you need to know is how much she started with and how much she spent.
