Living in the central Australia desert has itsproblems,____ obtaining water is not the least.A.for which B.to which C.of which D.in which详解翻译

Living in the central Australia desert has itsproblems,____ obtaining water is not the least.A.for which B.to which C.of which D.in which详解翻译
Living in the central Australia desert has itsproblems,____ obtaining water is not the least.
A.for which B.to which C.of which D.in which
详解翻译

Living in the central Australia desert has itsproblems,____ obtaining water is not the least.A.for which B.to which C.of which D.in which详解翻译
C生活在澳大利亚中央的沙漠里有很多困难,其中水的获取难度最大

C生活在澳大利亚中央的沙漠里有很多困难，其中水的获取难度最大