In the sentence "Nam asked Mai what can he do to help her" the incorrect section is "can he".
In a sentence, it is expected all elements lead to a coherent and complete idea. In this context, all elements should be grammatically correct.
The sentence is referring to a finished action "asked"; however, a verb in the present tense is being used "can he do", which is not coherent. Therefore, this section is incorrect and should be written as "could he".
Note: This question is incomplete; here is the complete question:
Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
Nam (A) asked Mai what (B) can he do (C) to help (D) her.
Learn more about present tense in: https://brainly.com/question/10607535
