单选题
Customer service representatives are trained to speak to shoppers ______ and work out the best solutions to a complaint or problem.
【正确答案】
D
【答案解析】[解析] 副词词汇
根据上下文语义，此处表示“客服员工接受培训在与顾客沟通时要言语礼貌得体”，故应选副词D. politely(有礼貌地)。A. generously表示“慷慨地”，B. undeniably表示“不可否认地”，C. arguably表示“可争论的”。