Question

sat语法的一个问题啊

（Clara Barton, an American nurse, whose influence as a reformer） in the field of health care almost equals that of Florence Nightingale.
(A) Clara Barton, an American nurse, whose influence as a reformer
(B) Clara Barton, who was an American nurse and whose influence as a reformer
(C) An American with influence as a nursing reformer, Clara Barton
(D) Clara Barton was an American nurse whose influence as a reformer
(E) An American, Clara Barton who was a nursing reformer and whose influence
这句话我本来选a的，答案是d，一直没搞清楚这个语法点，请教

Answer 1

如果选A 那么就不是一句完整的句子了 an American nurse做同位语 whose引导一个定语从句 可以去掉 那么整个文字就成了 Clara Barton
B也是 不是完整句子
C不平行 Clara Barton和 that of Florence Nightingale不平行 而且这句话that也指代不明
D就对了 整个句子主干是 Clara Barton was an American 后面是定语从句
E也不是个完整的句子

还有什么不清楚的 百度hi我