单选题 Although the life was very harsh, the doctor remained on the island for the reason of the people.

【正确答案】 A

【答案解析】[解析] for the reason后常跟that从句；in aid of支持，援助；the privilege of doing sth．有……的特权/特别待遇；the privilege to do sth．享有做某事的特权；concern关心，担心，担忧。因此A为答案。