Your english teacher has asked you to write a short three-page research paper. which topic is the most narrow?
a. how lake pollution affects fish
b. how water pollution affects sea life
c. pollution
d. water pollution

The major difference between the communist party in china and political parties in the united states is that a. in the united states, political parties have no role in government. b. in china, the communist party shares power with the national people's congress. c. in the united states, political parties hold widely differing views on almost every topic. d. in china, the communist party runs the government with no opposition.