Question

html document must have HTML or_____________ extensions​

Answer 1

Explanation:

An HTML file is nothing more than plain ASCII text, but all HTML files must have a special file extension for web browsers to recognize them. This extension is either . htm OR . html.

Answer 2

Answer:

htm

Explanation:

An HTML file is nothing more than plain ASCII text, but all HTML files must have a special file extension for web browsers to recognize them.