Q1: So dogged were Frances Perkins’ investigations of the garment industry, and her lobbying for wage and hour reform was persistent, Alfred E. Smith and Franklin D. Roosevelt recruited Perkins to work within the government, rather than as a social worker.

and her lobbying for wage and hour reform was persistent,
and lobbying for wage and hour reform was persistent, so that
her lobbying for wage and hour reform persistent, that
lobbying for wage and hour reform was so persistent,
so persistent her lobbying for wage and hour reform, that
这题的正确答案是c，但是答案的开头是不是少了一个and啊？