Which statement about ROI is true?

• A. ROI is the total revenue of a project.
• B. ROI is the time to recover the initial investment in days.
• C. ROI is the amount of money saved by reducing costs.
• D. ROI is typically expressed as a percentage.

Answer: (D)

ROI measures how efficiently an investment performs by comparing the profit you get to the amount you invested, and it’s usually shown as a percentage. This percentage format makes it easy to compare different projects at a glance, since it relates earnings directly to cost.

The idea is that ROI = (net profit / cost of investment) × 100, where net profit is what you gain after covering all costs. Because it expresses return as a share of the investment, you can see not just how much money a project makes, but how effectively that money is used.

That’s why expressing ROI as a percentage is the best choice. Total revenue doesn’t account for costs, so it can be misleading. The payback period focuses on how long it takes to recover the initial outlay, not on overall profitability. Simply stating the amount saved by reducing costs captures savings, but ROI looks at how much you gain relative to what you spent, providing a comparable profitability measure.