Read each sentence to find out whether there is any grammatical error in it. The error, if any will be in one part of the sentence. The letter of that part is the answer
Unless you did not do your homework you will be punished, said the teacher.

Options

A. A) said the teacher
B. B) do your homework
C. C) you will be punished
D. D) unless you did not

Answer

D

Explanation

According to the context of the given sentence, a condition is given and for a conditional statement we use .If instead of unless.. Hence, .If you do not do your homework, you will be punished. will be answer.