A producer must keep copies of advertisements for

Keeping copies of advertisements for only one year does not comply with FTC regulations, which require a longer retention period to ensure that claims can be substantiated if needed. A one-year duration would be insufficient for addressing potential disputes or inquiries regarding advertising practices.

A two-year retention period falls short of the required three years mandated by the FTC. This insufficient duration would hinder the ability to verify the accuracy of advertising claims and could lead to noncompliance with regulatory standards.

While a five-year retention period exceeds the required three years, it is not the correct answer to the question asked. Although longer retention can be beneficial for some businesses, the specific regulatory requirement is set at three years, making this option unnecessarily excessive.