문제 내용: 다음 글의 요지로 가장 적절한 것은?
선택지 1: We should be more determined to persuade others.
선택지 2: We need to listen and speak up in order to communicate well.
선택지 3: We are reluctant to change our beliefs about the world we see.
선택지 4: We hear only what we choose and attempt to ignore different opinions.