"Weather modification" is a weather protection measure provided by the Olympic Meteorological Service Center. If it rains during the competition, the staff will pass the labor force.

Test and analysis: The weather will affect the Olympic Games, but in the face of the objective world, we are not powerless, and consciousness is the driving force. On the basis of understanding and grasping the law, we can use the law according to the conditions and forms of its function, transform the objective world and benefit mankind. "Artificial rain reduction" is the embodiment of our dynamic transformation of the objective world, so C meets the meaning of the question. A, b and d don't match the meaning of the question.