What must an opt-out notice include according to regulations?

The correct answer emphasizes that an opt-out notice must provide a clear explanation of the right to opt out. This is crucial as it ensures that consumers are fully informed about their rights regarding personal information and can make an educated decision about whether to limit the sharing of their data with third parties. By including such an explanation, the notice serves its purpose of empowering consumers to take control of their shared information, reinforcing the importance of transparency in data privacy practices.

The other options do not focus on the essential element required for an opt-out notice. A detailed account of every transaction in the last year, an annual report of consumer credit scores, and a financial summary of all disclosed information would not fulfill the primary objective of clearly articulating the opt-out right, which is fundamental to protecting consumer privacy rights.