Fill in the blanks: The _______ tool allows you to compare up to five domains to see common and unique keywords. With the help of the _______ tool you can pick the best _______ with the most authority.

The Keyword Gap tool is designed to identify common and unique keywords across multiple domains, making it ideal for comparing up to five competitors. The Backlink Gap tool, on the other hand, helps analyze the backlink profiles of different domains, allowing you to identify strong referring domains that could be valuable for your own link-building strategy. Therefore, to pick the best domains with the most authority for backlink opportunities, you would use the Backlink Gap tool to evaluate their referring domains. The other options incorrectly pair the tools with their functions or the metrics they analyze.