单选题 In some countries, ______ is called "equality" does not really mean equal rights for all people.
A. which B. that C. what D. one

【正确答案】 C
【答案解析】[解析] 结构识别
从结构上看，这是含有主语从句的复合句；但主语从句缺少主语，因此选连接代词 what，C为答案。