Which of the Following Best Defines an Open Access Site

Which of the following best defines an open access site?

A) Centers on some common hobby,interest,or characteristic that draws members to the site.
B) Illustrates that most nodes in a social graph are not directly linked to one another.Instead they are indirectly connected via neighbors.
C) Offers a relatively small number of items to buyers who tend to be loyal to these outlets.
D) Enables anyone to participate without registration or identification.
E) Sets forth expectations for user behavior as well as for that of the host or governing body.