Which of the following refers to an educational website that allows its members to add or change its information?

A wiki is a website whose members can freely add, edit or change its content collaboratively.

An educational or edu site simply denotes a school domain and need not allow member editing.

A social networking site connects people and shares posts but is not built for jointly editing an article.

Web 2.0 names a broad era of interactive websites rather than one editable educational site.

A wiki keeps a version history so earlier edits can be reviewed or restored.

Wikipedia is the best known educational wiki built this way.