A new teacher was sent to the village in place of

A new teacher was sent to the village in place of ______ one who had retired. a. a b. the c. an d. its为什么会选b

为什么？？？

the表示特指
the one表示 那一个人后面接了一个定语从句

有不明白的地方再问哟，祝你学习进步，更上一层楼！ (*^__^*)

一个新老师取代那位已退休的老师，被派去农村教书。