Which of the following can lead to the termination of an auction listing contract?

The completion of the auction directly leads to the termination of an auction listing contract because the purpose of the contract is to facilitate the sale of items within a specified timeframe or until the auction itself concludes. Once the auction has taken place and the items have either been sold or remain unsold, the objectives of the contract are fulfilled, thus resulting in its termination. This aspect aligns with standard practices in auction agreements, where the agreement is set for the duration of the auction event.

In contrast, a change of ownership or external factors like social events and weather may impact the auction or the decision to proceed with it, but they do not inherently fulfill the purpose of the auction listing contract nor complete the transaction process. Therefore, these factors do not serve as direct causes for the termination of the contract. The completion of the auction is the definitive event that concludes the listing agreement.