Which file type is typically associated with markup languages?

The choice of .html as the file type associated with markup languages is accurate because HTML, which stands for Hypertext Markup Language, is a standard markup language specifically designed for creating and structuring content on the web. Markup languages use tags to define elements within the document, enabling browsers to interpret and render text, images, links, and other content appropriately.

HTML utilizes a variety of tags, such as

for headings,

for paragraphs, and for links, to organize and format the content displayed on web pages. This ability to structure and present content is a defining characteristic of markup languages.

In contrast, .txt files simply contain plain text without any markup or formatting instructions, and .css files are used for styling HTML documents rather than defining the document's structure. CSS (Cascading Style Sheets) is a stylesheet language that allows for the specification of how HTML elements should be displayed, emphasizing the visual presentation rather than the actual content structure. This distinction reinforces why .html is the correct answer as the file type directly associated with markup languages.