The correct answer is: B. content
The content
property generates content in a document and is used with the :before and :after pseudo-elements. It can be used to insert text, images, or other elements into the document.
The text
property is used to specify the text that should be inserted into the document. It can be used to insert a single character, a string of characters, or a piece of HTML.
The contents
property is used to specify the contents of a block element. It can be used to insert text, images, or other elements into the block element.
The none
option is incorrect because it does not generate content in a document.