Choice "C" is correct. If a company issues financial statements that purport to present financial position and results of operations but omits the related statement of cash flows, the auditor will normally conclude that the omission requires qualification of the opinion.
Choice "d" is incorrect. If the company fails to present its statement of cash flows, this is considered inadequate disclosure. The auditor would not issue a disclaimer of opinion for inadequate disclosure.
Choice "a" is incorrect. The auditor would not issue a review report when performing an audit.
Choice "b" is incorrect. The auditor cannot issue an unmodified report if the client omits a statement of cash flows from the financial statements.