Final answer:
Supplementary Content (SC) is crucial for enhancing user experience on web pages. Web pages combine PR, advertising, and editorial content to reach receivers, while relevance is key for information matching research needs.
Explanation:
Supplementary Content (SC) contributes to a good user experience on the page and directly helps the page achieve its purpose.
Web Pages: A Web page's external communication can combine elements of public relations, advertising, and editorial content, reaching receivers on multiple levels and in multiple ways. Banner ads, blogs, and advertiser-driven 'click-through' areas are just a few of the elements that allow a business to deliver a message to a receiver online.
Relevance: This test of a website asks you how important is the information to the specific topic you are researching. You will want to determine if you are the intended audience and if the information provided fits your research needs.
Learn more about web content and user experience here:
https://brainly.com/question/18511742
