Which of the following classifies as metadata about a webpage?

Metadata refers to data that provides information about other data. In the context of a webpage, metadata describes elements that are not directly visible on the page itself but are essential for understanding the content and purpose of the page. The title of the webpage serves as a critical piece of metadata because it summarizes the content and purpose of that page. It is typically displayed in the browser's title bar or tab and is also used by search engines to index and rank pages, contributing to SEO (Search Engine Optimization).

In contrast, the content of the page is what users see and engage with directly; the background color is a styling element that affects the appearance of the page; and the images used are part of the page’s content as well. While all of these elements are important for designing and displaying a webpage, they do not classify as metadata. Metadata is specifically information that assists in categorizing, describing, and labeling the webpage's content without being part of the visible content itself.