Final answer:
Credit card is an example of open-end credit.
Step-by-step explanation:
An open-end credit is a type of credit that allows the borrower to make purchases up to a certain credit limit and pay back the borrowed amount over time, with interest. The borrower can continue to borrow from the credit line as long as the account remains open and in good standing. Out of the given options, the example of open-end credit is credit card, option c.