Final answer:
The correct tag question for the statement 'He rarely comes to school' is 'doesn't he?,' which seeks confirmation on the statement made.
Step-by-step explanation:
The tag question for the statement 'He rarely comes to school' would be 'does he?' resulting in the complete sentence 'He rarely comes to school, doesn't he?' Tag questions are used at the end of statements to ask for confirmation, and they are formed by using an auxiliary verb and a pronoun.
The auxiliary should be in the negative form if the statement is positive, and in the positive form if the statement is negative. Since 'rarely' suggests the statement is in the negative form, we use 'doesn't he' to turn it into a tag question.