Final answer:
An auctioneer is a professional who sells property at an auction by managing the auction process, setting the starting price, and facilitating the bidding process.
Step-by-step explanation:
An auctioneer is a professional who sells property at an auction. They are responsible for managing the auction process, setting the starting price for the property, and facilitating the bidding process to ensure a fair and competitive sale. The auctioneer's role is to attract bidders and generate the highest possible price for the property being auctioned.