What are fees? a. The interest rate that commercial banks charge their most credit-worthy customers. c. A fixed sum charged, as by an institution or by law, for a privilege. b. The fee you pay to use a credit card calculated on outstanding balance and APR percentage. d. Different rates of interest apply to different purchases on a credit card.

c. A fixed sum charged, as by an institution or by law, for a privilege.

Explanation:

In summary, we can consider that fees are fixed amounts of money, which must be paid for any service charged by an institution or by the government through laws, which charge for services or social privileges. These fees can be applied in very different ways, the important thing is that they maintain a functional and available service, in addition to charging a price that suffers little variation.

the pronoun reference replaces a noun, but you have to make sure there's no room for confusion.

in the first sentence "her" could be referring to shely or to the sister. the answer there is "shelly called her sister and told her about the new baby."

in the second sentence "it" could be referring to the roof or the floor. the answer there is "since the roof leaks on the family room floor, we need to repair the roof."