George Orwell, ________ was Eric Arthur, wrote many political novels and essays．
A.the real nameB.what his real nameC.his real nameD.whose real name在线课程D
解析：
从选项看，没有连词，因此肯定是从句。看题意，应该是定语从句，修饰George Orwell，只有D项是定语从句的形式。A改成the real name of whom就对了，故选D。