The second statement is the most accurate.
Hope this helps!
A.
Complex sentences have a lot of words and go into further detail than a basic sentence.
Answer:
It helps define the theme by providing the contrast of a river as opposed to a town. A river is forever flowing,free, and untamed, it represents freedom. While a town has structure, and rules, and ways in which is must 'act'. This represents slavery.
Explanation: