Read the following paragraph from a speech: You may have noticed that the groundhogs of this area are
fewer in number than they used to be. I wondered about
this myself and began researching what might have
caused this decline. It turns out that the water supply the
groundhogs had relied upon in the past has been diverted
by the new shopping center a mile away. But all is not lost.
By petitioning your city council representative, you can help
persuade the city to fund a new water project to restore the
wetlands in this part of the town.

Which statement best explains why the final sentence is effective?

A. It establishes the speaker's personal credibility on the issue.

B. It asks the audience to play a role in solving a problem.

C. It identifies a problem and makes a connection to the audience.

D. It lends the paragraph a more positive tone.