Why are keywords vital for SEO?

Keywords are vital for SEO because they serve as a bridge between what users are searching for and the content that is available on websites. When users enter a query into a search engine, the engine uses keywords to determine which pages are most relevant to that search. By incorporating relevant keywords into content, webmasters signal to search engines the topics and themes of their material, making it easier for the engines to index and rank them appropriately in search results.

This relevance is crucial for attracting organic traffic, as higher placement in search results typically leads to increased visibility and, consequently, more clicks from potential visitors. By strategically using keywords, businesses and content creators can align their offerings with user intent, helping to ensure that their sites are shown to the right audience when they are looking for specific information, products, or services.

While the other options touch on aspects that are important in different contexts, the direct link between keywords and search engine relevance firmly establishes option B as the most crucial reason for their importance in SEO efforts.