单选题 Interpersonal relationships are important because ______.

A、 they are indispensable to people's social well-being
B、 they awaken people's desire to exchange resources
C、 they help people to cope with life in the information era
D、 they can cure a range of illnesses such as heart disease, etc

【正确答案】 A

【答案解析】第一段从人的社会性的角度说明人际交往对个人身体和心理健康的重要性。