An investor is reviewing a company’s income statement to assess its financial performance but notices it does not account for inflation, making it difficult to determine the true purchase price of the company’s earnings. Which limitation of the income statement does this scenario illustrate?

This choice directly addresses the issue presented in the scenario. Income statements typically report earnings in nominal terms without considering inflation, leading to potential misinterpretation of a company's financial health. Thus, the investor's challenge in assessing the purchasing power of earnings is a clear example of this limitation.

Income statements do not primarily serve to show cash flow changes; that role is fulfilled by the cash flow statement. While the income statement reports revenues and expenses, it does not provide details about cash inflows and outflows, making this choice irrelevant to the scenario regarding inflation and purchasing power.

While income statements may not always include non-operating income, this aspect does not relate to the issue of inflation in purchasing power. The presence or absence of non-operating income does not affect the nominal reporting of earnings and thus does not illustrate the limitation highlighted in the scenario.