Contoso Cars run search campaigns that they want to extend to the Microsoft Audience Network. They will need to create new campaigns to do this.

False. Contoso Cars does not need to create new campaigns to extend their search campaigns to the Microsoft Audience Network. Instead, they can simply enable the Audience Network for their existing search campaigns. This allows them to leverage their existing keywords and targeting to reach a broader audience on native placements across Microsoft properties and partner sites. Creating new campaigns would be redundant and inefficient, as the platform is designed to integrate Audience Network targeting directly into existing search campaigns.