Answer:
A. Less than 5%
Explanation:
The correct answer choice would be "A," because many people just don't use agriculture to make a living. Our world has been industrialized, for the most part, and has developed by a huge amount all over the world.
I'm not so good at science but I believe just from the Internet and common sense that it could be found in Hawaii, Yellowstone, Iceland, and (not completely sure for last one) but maybe Pompeii. I know the first 3 are most likely correct but I'm not completely sure about Pompeii. Just look it up, lol
yangtze river and the yellow river
The sun's atmosphere: Photosphere, chromosphere and corona.