Last Updated on 5 years ago by School4Seo Team

• A 3rd-party verification tracker
• HTML5 formatting
• Data sharing is enabled
• A valid landing page

The correct answer is: A valid landing page

Explanation: Creatives cannot serve until they’re assigned to an active line item and have gone through an initial review that takes approximately 24 hours and includes confirming at least one valid landing page.
Read more here: https://support.google.com/displayvideo/answer/6063030