What information must be reported to the IRS for closed real estate transactions?

The correct option highlights the specific information required by the IRS for closed real estate transactions, which includes the seller's name(s) and social security number(s). This is crucial for tax reporting purposes, as the IRS needs to track income earned through property sales. The supervising broker's information is also included to establish responsibility for the transaction within the context of brokerage activity.

This information is essential because when a property is sold, the seller can have capital gains that must be reported to the IRS. The seller's social security number identifies them in tax records, ensuring that any income from the sale is accurately attributed to them for taxation purposes. This ensures compliance with tax laws and regulations in real estate transactions.

The other options do not align with IRS requirements for reporting closed real estate transactions. While property address, closing date, buyer’s financial details, or sale price may be part of different documentation needs, they are not specifically mandated for reporting to the IRS in the same manner as the seller’s information.