Which of these factors affect whether a Search ad shows in the results for a query and what position it assumes?

• Bids does this and it’s determined by how much marketers will pay for a click.
• Asset impact does this, and it’s based on sitelinks and image assets.
• Ad Rank does this, and it’s based on a variety of factors to show useful ads.
• Ad quality does this, and it’s based on ad and website relevance.

The correct answer is:

• Ad Rank does this, and it’s based on a variety of factors to show useful ads.