Millionaire Mode

Directions: The sentence given below has been split into three parts marked (a), (b) and (c). Read the sentence to find out the error, if any. The sentence does not have more than one error. If you find any part erroneous, pick that part as your answer or choose (d) as your answer in case of no error.

Teacher said (a) that the earth moved (b) around the sun. (c) No error (d)