When sellers accept money as payment in market transactions, money is serving as a a. medium of exchange. b. store of value. c. unit of accounting. d. standard of deferred payment.

option A

Explanation:

the correct answer is option A

In the early period of time barter system is used in which goods were exchanged with goods.

If you want to buy an article then you can do it with the help of money and if you want to sell that article that also you can do with the help of money so, we can say that money is a medium of exchange.

well, there are a lot of places we get information about earth from. like science classes, websites, books, newspapers, etc.