The correct answer is D. Auctioneer.
An auctioneer is a person who conducts an auction, a public sale of goods or property to the highest bidder. The auctioneer is responsible for setting the bidding process in motion, calling out bids, and accepting the winning bid.
A conjurer is a person who performs magic tricks. A bursar is a person who is responsible for the financial affairs of an institution, such as a university or hospital. A chairman is the person who presides over a meeting or other gathering.
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