Suppose you are assigned to prepare

Suppose you are assigned to prepare a five-minute speech
explain the terms of definition and evaluate this article in terms of authority / credibility

There is no information about the author of the site -- such as author’s name,
author’s occupation / position or author’s experience / education -- and also no an e-mail link
to contact the author. If the article does not contain an author, it is most likely not credible.
The best indicator that the article is reliable is the author of the site provides contact
information and his credentials. The more information you have about the author of the site
and can verify that the information is true, the easier it will be to determine the site’s
reliability.