In this excerpt, Charlotte and Mrs. Sowerberry are reacting to what the reader sees as Oliver's justifiable anger towards Noah. Noah most likely pours water on Mrs. Sowerberry because he misunderstands Charlotte. Charlotte's reference to creatures "born to be murderers and robbers" suggests that she is contemptuous of the working classes.
Hope this helps!!
Here, you would need to add the preposition "in."
The sentence should read: My elder sister is really interested in the problems of the environment.
Other prepositions would not make sense and could confuse the reader as to the intended meaning.
Answer:I can't particularly tell what the answer choices are BUT there shouldn't be a comma after rivers and before of
Explain: The sentence doesn't make sense with the extra comma re-read it and see where im talking about.