The correct answer is C . A central role of the U.S. Securities and Exchange Commission (SEC) is to protect investors and promote fair, orderly, and efficient markets by requiring public companies to provide reliable, useful disclosure. The SEC’s stated mission is to protect investors , maintain fair and orderly markets, and facilitate capital formation. In financial reporting terms, this means helping ensure that users of financial statements receive credible information for decision-making.

Option A is incorrect because the SEC is not primarily a training body for controllers. Option B is also incorrect because ensuring auditors have resources is not the SEC’s core financial reporting role. Option D is too broad and management-focused; the SEC’s primary public-facing purpose is investor protection through disclosure oversight and enforcement. Public company filings such as Forms 10-K and 10-Q exist so investors and other users can evaluate financial condition, performance, and risk using standardized information. Therefore, the best answer is that the SEC helps ensure financial statement users are provided with reliable information for decision-making.