To answer or reply to a question, call, or request; to give a response (spoken or written).
先生の質問に学生が大きな声で答えた。
A student answered the teacher's question in a loud voice.
メールで問い合わせに答えるのに時間がかかった。
It took time to reply to the inquiry by email.
彼は電話に出て相手の質問に丁寧に答えた。
He picked up the phone and answered the caller's questions politely.
自分の気持ちに正直に答えることが大切だ。
It's important to answer honestly to your own feelings.