Every time that your ad is eligible to show, AdWords calculates its Ad Rank using your bid amount, components of Quality Score and:52

• the daily budget you’ve set
• your historical conversion rate
• the search ranking of your website
• the expected impact of extensions and other ad formats

The correct answer is: the expected impact of extensions and other ad formats

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Explanation: Every time your ad is eligible to show, Google Ads calculates its Ad Rank using your bid amount, components of Quality Score, and the expected impact of extensions and other ad formats A value that’s used to determine your ad position (where ads are shown on a page) and whether your ads will show at all. Ad Rank is calculated using your bid amount, the components of Quality Score (expected clickthrough rate, ad relevance, and landing page experience), and the expected impact of extensions and other ad formats.

Read more here: https://support.google.com/google-ads/answer/1752122