Final answer:
The IRS uses a team approach in its field audits of large corporate taxpayers known as the Coordinated Examination Program.
Step-by-step explanation:
The correct answer is c. Coordinated Examination Program. When the IRS examines the returns of large corporate taxpayers, it uses a team approach in its field audits known as the Coordinated Examination Program. This program allows the IRS to assign a team of examiners with different expertise to review the taxpayer's records and ensure compliance with tax laws.