reply

verb
  1. To respond to a question, statement, or situation, often in a formal or conversational manner. verb
    She replied to his email promptly.
    When asked about his plans, he replied that he was undecided.
  2. A response or answer given to a question, statement, or situation. noun
    His reply to the invitation was a polite refusal.
    The teacher waited for a reply from the students.