An investment which gives the holder a regular income in return for one initial payment may be known as a(n):

The correct answer is Annuity. An annuity is a financial product primarily offered by insurance companies that provides a series of regular payments, typically for a specified period or for the rest of the annuitant's life, in exchange for an initial lump-sum payment or a series of payments. It's designed to provide a steady income stream, often used for retirement planning, ensuring financial security during non-working years.

• An Ordinary share (A), also known as common stock, represents ownership in a company and provides variable returns through dividends (if declared) and potential capital appreciation, not a guaranteed regular income for a single initial payment. Its value fluctuates with market conditions.
• Return (C) is a general term referring to the gain or loss on an investment over a specified period, expressed as a percentage or absolute value. It describes the outcome of an investment, not the investment vehicle itself.
• A Discount factor (D) is a mathematical term used in finance to calculate the present value of a future cash flow. It is a component of financial analysis, not an investment product that provides income.