Which of the following is a type of selector in CSS?

Element selectors are a fundamental type of selector in CSS that allow you to apply styles to specific HTML elements based on their tag name. For example, if you want to style all paragraphs in a document, you would use the element selector "p" in your CSS. By doing this, you can change properties such as color, font-size, margin, and padding for all <p> elements within your HTML.

Element selectors are essential for maintaining consistency across pages and controlling the appearance of various elements globally. They provide a straightforward way to access and style elements without requiring them to have specific classes or IDs, making your CSS more efficient and easier to manage.

In contrast, the other options listed do not represent recognized types of CSS selectors. Button selectors, text selectors, and background selectors are not standard CSS terminology; they may refer to styling specific properties but do not function as distinct selectors within the CSS framework. This reinforces the importance of understanding the basic types of selectors available in CSS for effective web development.