Computer Science for IGCSE & O level - Automated And Emerging Technologies (Section 7 - No. 5)

Which statement best describes how a search engine learns to improve search results?

By using human-written rules.

By analyzing user search patterns and feedback.

By randomly selecting the best results.

By only displaying results from the most popular websites.

Search engines use data about what users click on, the amount of time spent on pages, etc., to improve the results.