单选题 The charity organization decided not to hire him as an employee when they discovered his ______ to the suffering of homeless people.
【正确答案】 D
【答案解析】[解析] 词汇：名词
1．这是一道词汇题，选项均为名词。
2．原文意思是“那位员工没有被录用是因为他对无家可归的人漠不关心”，因此D为正确选项。