What is the primary criterion for a result to receive a Fully Meets rating?

For a result to receive a Fully Meets rating, the fundamental requirement is that all or almost all users would be completely satisfied by the result. This rating indicates a high level of relevance, quality, and fulfillment of user needs. When users are completely satisfied, it signifies that the content successfully meets their expectations and requirements, making it highly effective for its intended purpose.

This criteria emphasizes user satisfaction as the primary goal of the search results. If a result can cater to the needs of nearly every user effectively, it exemplifies the best standard for what a Fully Meets rating should represent in terms of fulfilling user intent and delivering valuable, relevant information.

Other options do not address the comprehensive satisfaction of users: while minimal effort and engagement are important aspects, they do not alone ensure complete satisfaction across the board. The emphasis on a broad range of users being satisfied is what distinguishes this criteria.