Answer:
B. The Hudson River became polluted in the effort to gain wealth.
Explanation:
The given question refers to an excerpt from the story <em>River of Dreams</em> written by Hudson Talbott.
A summary is a shortened version of a piece of writing (e.g. an excerpt, chapter, book, article). It should contain only the main ideas and most important supporting details presented in the text. The main idea is the most important point the author is making, and supporting details are pieces of information that explain, describe, illustrate, or expand the main idea.
The author of the given excerpt tells about how the Hudson River became polluted while people living around it aimed to gain wealth. That is the main idea of the excerpt, which is why option B is the correct one. The rest of the options are supporting details, which makes them incorrect.