解析： 信息题。A选项“节省员工的开销”和原文第三段“casual dress code helps them save money”相符；B选项“让员工看起来更加有吸引力”未在文中提及；C选项“提升员工的动力”和原文“casual dress improves employee morale”相符；D选项“让员工心情更愉悦”体现在原文“people seem happier and more productive when they are wearing comfortable clothes”。
