Answer:
d. People are willing to accept a currency in the future as compensation for debts accrued earlier
Step-by-step explanation:
Money can be used to pay your current debts at a later date since $100 will still be $100 in the future. They might lose some of its value due to inflation, but they do not spoil or rot, and will probably be accepted in the future. imagine trying to pay an old debt with rotten tomatoes or an old cow.