We can eliminate A because the environment can be destroyed, we can eliminate B because social institutions are never hard to replace and cannot be replaced by the natural environment, and we can eliminate D because some of the answers do not apply. In this way we can see that the answer is C. The answer is C because humans depend on the natural environment for everything provided to us. Without the things we get from the natural environment, we would not be able to advance as a society.
The answer is d. A theocracy is a government form in which a religious king or group rules over a kingdom/country. For a modern example, The Vatican City is a theocracy.
