What can be determined when a firm performs an external audit of a company's financial...

The correct answer is B. Whether a company’s financial statements fairly reflect its financial position . The purpose of an external audit is for the independent auditor to express an opinion on whether the financial statements present fairly, in all material respects , the company’s financial position, results of operations, and cash flows in conformity with the applicable financial reporting framework. PCAOB auditing standards state this explicitly in the required auditor’s report language.

Option A is incorrect because anyone reading the income statement can see whether the company reported a profit or loss; that alone is not the purpose of the audit. Option C is incorrect because tax liability is not what the audit opinion is primarily determining. Option D is also incorrect because an audit does not certify that the statements were prepared by a particular kind of employee such as a trained bookkeeper. Instead, the audit evaluates whether the statements are fairly presented and free of material misstatement. Therefore, the best answer is that an external audit helps determine whether the company’s financial statements fairly reflect its financial position .