Domestic tourism usually consists of _____ travel activities con

Domestic tourism usually consists of _____ travel activities conducted by citizens within their own country.
A、medical
B、adventure
C、leisure and business
D、educational
【正确答案】：C
【题目解析】：C. leisure and business（休闲和商务）：这个选项包括了两种主要的国内旅游类型。休闲旅游指的是人们为了娱乐、放松或参观文化景点而进行的旅行，而商务旅游则与商业活动或工作相关。这两种类型共同构成了国内旅游的主要内容。