What information must be included in all advertising by an auctioneer?

The correct answer is that all advertising by an auctioneer must include the name, address, and license number. This requirement is crucial for maintaining transparency and trust in the auction process. By including the name and address, potential clients can verify the identity and credibility of the auctioneer, ensuring that they are dealing with a legitimate professional. The license number further establishes this legitimacy, as it serves as proof that the auctioneer is duly licensed and adheres to state regulations. This level of accountability is important to protect consumers and uphold the integrity of the auctioning process.

In contrast, options that include other pieces of information, such as contact email or tax identification numbers, while potentially useful for transactional purposes, do not fulfill the specific requirement set forth by regulatory bodies for auctioneer advertising. Similarly, listing the auction schedule or types of items being auctioned, while informative, does not address the essential components of identity and legal standing that are emphasized in the advertising regulations. Thus, including the name, address, and license number is the key information mandated in auctioneer advertising.