Final answer:
The correct fill-in-the-blank for the statement regarding keeping filed taxes for IRS review is 'audit.' An IRS audit is a review of accounts and taxes filed to ensure correctness and compliance with tax laws.
Step-by-step explanation:
When the statement says 'Always keep your filed taxes for at least three years in case the IRS decides to audit your tax return,' the correct answer is A. Audit. An audit is a review or examination of accounts and financial information to ensure information is reported correctly according to the tax laws and to verify the amount of tax reported is accurate. It's not likely for the IRS to approve or reject a tax return in the context of needing to keep your records; rather, the IRS processes tax returns, and any issues typically result in correspondence requesting additional information or clarification. Choosing to ignore a return is not an operational procedure for the tax authority.