Answer:
The correct option here is A) Buying new weights comes under medium of exchange and opting to go for Florida vacation comes under a standard unit of account .
Explanation:
When money is accepted by a seller or producer as a payment for market transaction, then we can say that money is used as a medium of exchange. In this question an example of this is, when Nicholas buys new free weights from the market .
When money is used as a standard of value , which allows for comparison to be made between relative worth of goods and services, then we can say money is used as a standard unit of account . An example of this is Nicholas opting to go on Florida vacation.