The immigrants spread unevenly across the country, with ______ h

The immigrants spread unevenly across the country, with ______ having the largest percentage of immigrants.
A、Northeast
B、the West
C、Midwest
D、the South
【正确答案】：B
【题目解析】：全国各地的移民分布不均衡，西部地区的移民比例最大。