The Correct answer is All of the above. • Money is what money does. According to this statement, the importance of money lies in the functions it performs. • Primarily money performs four basic functions which are summed up in the following couplet: "Money is a matter of functions four: a medium, a measured & a store. " Important Notes: • It is the most important and unique function of money which separates it from near-money assets. The use of money as a common medium of exchange has greatly facilitated the activity of buying and selling goods and services. • Money facilitates not only the current transactions of goods and services but also their credit transactions. It facilitates credit transactions when present posts are exchanged against future payments. • The modern economy is based on credit i.e., promise to pay. The present-day itself (coins, currency notes, cheques, bank drafts, etc,) is nothing but only a promise to pay. Hence All options are correct.