2. Your English teacher has asked you to write a short three-page research paper. Which topic is the most narrow? A. How Water Pollution Affects Sea Life B. Water Pollution C. How Lake Pollution Affects Fish D. Pollution
I would guess that it would be C. Sea Life is broader than "fish". Water pollution is much broader than both because it isn't targetting any specific topic within water pollution, and pollution is anything within pollution which is even MORE broad. (not to mention C is concerning LAKE water instead of just water)