The correct option is A 25 Years and so.
Climate
is the average condition of the weather in a place over a long period like 25
years and so. While the weather can change in just a few hours, climate takes
hundreds, thousands, even millions of years to change. It characterizes a
region's general weather patterns that happen over the course of many years. The
climate of an area is affected by its latitude, terrain, and altitude, as well
as nearby water bodies and their currents. Climates can be classified according
to the average and the typical ranges of different variables, most commonly
temperature and precipitation.