Answer:
The correct answer is Option C, natural and continuous
Step-by-step explanation:
The variation in climate is predominantly a natural activity which is governed by various natural processes/cycles/activities/components such as blowing of wind – its direction and speed, the solar radiation, the rotation and revolution of earth, the behavior of atmosphere , various biogeochemical cycles, varying heat content in the earth’s atmosphere etc.
All these processes have been occurring continuously since the origin of planet earth and occur till today in the same manner and on the same time scale, thus, climatic variation can be considered as a natural and continuous process.