According to the passage, which of the following has changed the most in the last 500 years? "Some" in the last sentence of the

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问题 According to the passage, which of the following has changed the most in the last 500 years?
"Some" in the last sentence of the first paragraph refers to

选项 A、some cocoa trees.
B、some chocolate drinks.
C、some shops.
D、some South American Indians.