A.Humidity
B.Heat index
C.Climate

Hey Mate Here Is Your Answer
Reason:- Climate refers to the total of weather conditions and variations occurring over a large area over a long period.
The answer you're looking for is C. climate!
In a short, climate is the definition of a region's long-term weather pattern. Climate is described by some scientists as the average weather for a specific region and time span, typically over a 30-year period. It's really just a weather pattern for a certain location.
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