Answer:
C. A fixed stream of income or a stream of income that is determined according to a specified formula for the life of the security
Explanation:
A fixed income security is a type of investment that provides returns in form of regular, or fixed, interest payments and repayments of the principals when the security reaches maturity.
From the explanation above, the best possible answer is C. A fixed stream of income or a stream of income that is determined according to a specified formula for the life of the security