Directions: In question given below, some part of the sentence has error and some are correct. Find out which part of the sentence has error. If the sentence has no error, the answer is (D).

The mother, together (A)/ with her daughters and a son, (B)/ are going to the mall. (C)/ No error (D)

This is the correct option as this part of the sentence has the error. The sentence has subject – verb disagreement between the singular subject (leader) and plural verb (are going). The accompanying phrase only provides extra information and does not alter in any way the grammatical relationship between the subject and the verb.