What is money what are its main functions

Money is a medium that is used to exchange for items of worth, for example, tools, food, water, etc. Money as paper does not have any worth unless the government says so, such as using the gold standard, or just another standard.

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answer; the correct answer to the above statement is to increase the production of milk in a herd of milk cows, the highest producing cows were chosen as the mother;

is this an essay or multiple choice