One of the consequences of our planet's being warming up is a（n）

One of the consequences of our planet's being warming up is a（n） ______ in the number of natural disasters.
A、result
B、increase
C、reason
D、income
【正确答案】：B
【题目解析】：increase增加。句意：地球变暖的后果之一是自然灾害的增加。