How does Google decide if a page is relevant to a specific keyword?

Google determines a page's relevance to a keyword primarily by analyzing where and how often that keyword appears on the page. This includes critical on-page elements like the meta title (which appears in search results), header tags (H1, H2, etc., that structure content), and the body content itself. The presence and strategic placement of the keyword in these areas signal to Google what the page is about. Incorrect options: Social media performance is an indirect signal at best and not a primary factor for keyword relevance. Site accessibility (e.g., for users with disabilities) is important for user experience and SEO but doesn't directly tell Google what keywords a page is relevant for. The number of products sold is a business metric, not a direct indicator Google uses to assess keyword relevance for organic search rankings.