Stocks and bonds:
a. and checking accounts are all stores of value, but only stocks and bonds commonly function as mediums of exchange.
b. and checking accounts are all stores of value and commonly function as mediums of exchange.
c. and checking accounts all commonly function as mediums of exchange, but only stocks and bonds are a store of value.
d. and checking accounts are all stores of value, but only checking accounts commonly function as mediums of exchange.

d. and checking accounts are all stores of value, but only checking accounts commonly function as mediums of exchange

Explanation:

Checking accounts : Is a type of account operated with a financial institution that allows the customer to deposit and also make withdrawals. It is also knowns as transactional accounts. In running a checking account, account owners can have access to their money using debit cards, and the use of cheque.

•What makes checking account different from other types of bank account is that it allows the owner to make numerous withdrawals and there is also no limit to deposits.

Stock: Is an investment owned by an individual or groups through the purchase of shares from a company, it could also be a certificate issued to indicate ownership of shares in an organization.

•It is a a way of investing for an investor because as the stock grows the money also grows and also a means of raising money for an organization.

Bonds: Are issued by an organization in other to raise capital, they are securities with fixed income. The bond holder lends money to the bond issuer and the money is paid back at a fixed payment rate within a period.

a.