Select the correct active form of the given sentence.
By whom was this poem written?

Options

A. Who wrote this poem?
B. Who is wrote this poem?
C. Who write this poem?
D. This poem is wrote by whom?

Explanation

(a)Who wrote this poem? (Correct) (b) Who is wrote this poem? (Tense has changed) (c) Who write this poem? (Tense has changed) (d) This poem is wrote by whom ? (Incorrect Tense and Structure)