Which of the following best defines an income statement?

An income statement best captures a company's financial performance over a specific accounting period. This financial statement provides essential insights by summarizing revenues, expenses, and profits or losses, helping stakeholders understand how well the company has operated during that timeframe. By presenting a clear picture of the revenue generated and costs incurred, the income statement allows for analysis of profitability and operational efficiency.

Option C directly addresses the core purpose of the income statement, which is to reflect the results of a company's operations, thus providing the foundation for assessing its financial health and making informed decisions.