单选题 The ______ care of the body requires an understanding of its needs, allowing for variations resulting from climate, age or occupation.
【正确答案】 A
【答案解析】[注释] proper意为“适当的,正当的”,含有经过判断觉得是适宜的,合理的意义; tender意为“亲切的,温和的”;warm意为“热情的”;mild意为“轻微的,温柔的”。