Writing > Identifying Sentence Errors

The following sentence contains either a single error or no error at all. If the sentence contains an error, select the one underlined part that must be changed to make the sentence correct. If the sentence contains no error, select choice E.

The (A)largest European (B)type of newt grows to about seven inches, (C)while the largest American type, the California newt, (D)it grows to about six inches. (E)No error

(A)
(B)
(C)
(D)
(E) ?