Rachel wants to post content from digital cameras on the web. Which online tool will help Rachel to post and edit content on a webpage?
A.
email
B.
threaded discussions
C.
blogs
D.
wikis
E.
chat rooms

The correct answer is letter "D": wikis.

Explanation:

Wikis are collaborative web sites that can be edited by different users. Wiki users can create, modify, and delete content from a web page in an interactive, easy, and fast way. Wikis also keep a history of the changes made that allow recovering any previous state of the web page.

i was actually wondering the same thing but i've tried and i don't think you can. i think once you set it up then that's what it stays as. sorry ; -;