单选题 Male nurse are difficult to hire as many men reject this______ out of the long-existing discrimination.
【正确答案】 C
【答案解析】解析：考查名词辨析。句意为“雇男护士很难是因为很多男性出于长期存在的歧视而抗拒这种身份”。concept“观念，想法”；responsibility“责任”；identity“身份”；personality“性格”，故选C。