Cash flow streams for bonds are characterized by:

Cash flow streams for bonds are characterized by two or more payments made at different points in time because bonds typically provide investors with a series of cash flows, including periodic interest payments (coupons) and the return of the principal amount at maturity.

When an investor purchases a bond, they receive interest payments at regular intervals, which could be annually, semi-annually, or quarterly, depending on the bond's terms. Additionally, upon maturity, the investor receives the bond's face value. This structure creates a series of cash inflows (interest payments) followed by a final cash inflow (principal repayment), distinguishing bonds from financial instruments that might only provide a single payment or only involve fixed or one-time transactions.

In essence, the complexity and timing of these cash flows make option C the most accurate representation of how bond cash flows are organized.