Answer:
The correct answer is letter "C": equal payments paid at the end of regular intervals over a stated time period.
Explanation:
An ordinary annuity is a series of equivalent payments made over a fixed-time period at the end of each term. Ordinary annuity payments are made monthly, quarterly, semi-annually, or annually. Payments of interest on bonds are an ordinary annuity type.
The opposite of an ordinary annuity is an annuity due where payments are made at the beginning of the period.