Evelyn is writing a draft of a research paper. Her topic sentence is “While alligators and crocodiles may look similar, they have some significant differences.” Read her first paragraph. (1) Although they share many common traits, you can tell alligators and crocodiles apart. (2) Both reptiles live near water. (3) Alligators tend to be fairly dark colored, whereas crocodiles are usually greyish-green. (4) Alligators have a broad, wide, rounded snout and jaw, unlike the narrow, triangular snouts in crocodiles. (5) Crocodiles also have an exposed lower tooth that shows, even when the jaw is closed. (6) All of the alligator’s teeth are concealed.

Which sentence should be removed because it does not support the development of Evelyn’s central idea?

A.
Sentence 2
B.
Sentence 3
C.
Sentence 5
D.
Sentence 6