|A) Groups||B) Attributes|
|C) Tags||D) Sets|
HTML language is a set of markup tags. The code used to specify the formatting are called tags. Markup languages are designed for the processing, definition and presentation of text. The language specifies code for formatting, both the layout and style, within a text file.
HTML is an example of a markup language to improve the appearance of, and link text with data on the internet.