The central idea of the passage "If we assign the same causes to the same effects, then we should assume that if rain falls to the ground because of gravity in China, it should do the same in Japan and India. Likewise, we can assume that rain will fall to the ground in all other countries in Asia and on all other continents in the world" is that Rain falls everywhere on the Earth because of the same cause.
What is gravity?
"Gravity is the force by which a planet or other body draws objects toward its center."
The central idea of the passage is that rain falls everywhere on the Earth because of the same cause because gravity (that is the cause) results in the same effect (that is rain) everywhere.
Hence, option C is correct.
To learn more about cause and effect here
https://brainly.com/question/22690140
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