What is a nonlinear hypertext?

ANonlinear Hypertext is an advanced search technique that savvy web users utilize.

BNonlinear Hypertext is a list of pages and specific documents usually listed to the left of the webpage.

CNonlinear Hypertext is the link embedded in online text that enables readers to follow their own path through the content.

DNonlinear Hypertext is the bar at the top of the website that takes you to different parts of the site.