Answer: D. climate.
Step-by-step explanation:
A climate can be define as the average constant state of the everyday weather condition which represents the state of the atmosphere of a region which does not change over the period of 30 years. There are many factors which can be used to measure the changes occurring in climate. These includes the temperature, atmospheric pressure, wind, precipitation and humidity.
On the basis of the above explanation, The average conditions of the atmosphere in a particular area are referred to as the area’s: climate