Final answer:
HTML tags can define titles, fonts, and colors in a document but not the author. The correct answer is f. a, b, and c only.
Step-by-step explanation:
HTML tags define certain types of content and structure within a document. A correct answer to the question "HTML tags define which of the following in a document?" is f. a, b, and c only. HTML tags can define elements such as titles using the <title> tag, which appears in the head of the document. Fonts can be specified using the <font> tag or more commonly through CSS. Colors can be defined within html tags directly using the style attribute or through CSS. The author of a document is typically specified in the <meta> tags within the head section, not by HTML tags meant for content structuring or styling. Therefore, options d and e are not correct.
HTML tags define titles, fonts, and colors in a document. HTML, or Hypertext Markup Language, is used to structure the content of webpages. The title tag defines the title of the webpage that appears in the browser's title bar. Font tags define the appearance of text, including the font family, size, and color. Color can be specified using different HTML tags, such as the font tag or the style attribute.