用最常见的结构 as likely to do as,从新排列句子结构,比较 A, C, 大家肯定会选 C
According to a survey of graduating medical students conducted by the Association of American Medical Colleges, minority graduates are nearly four times as likely to plan on practicing in socioeconomically deprived areas as other graduates.
to plan on practicing in socioeconomically deprived areas 结构之所以后置,是因为太长。