This is the term for the weather patterns that an area experiences over a long period of time? a) climate. b) weather. c) available energy. d) position in space.

The correct option is A.
Climate refers to the long time pattern of weather condition in a particular area. Climate is measured by assessing the patterns of variation in temperature, relative humidity, wind, atmospheric pressure, precipitation and other meteorological variables in a given area over a long period of time.