In her book illustrations,which she carefully coordinated with her narratives, Beatrix potter capitalized on her keen observation and love of the natural world.
以上这是正确选项C
错误选项E是Beatrix potter, in her book illustrations, carefully coordinated them with her narratives and
E选项解释中的某句话让我很费解~~【Them cannot refer to book illustrations because the plural noun is the object of the preposition in 】
Beatrix potter carefully coordinated book illustraions with her narratives and capitalized on her keen observation and love of the natural world In her book illustrations。