What country are you taking about
Answer:
Single Sign-On (SSO) based authentication systems are commonly used in enterprise environments where employees require access to multiple applications/websites of their organizations.
Explanation:
The author uses ethos (author credibility and trust in their credentials) by using the word "our" so often. This places the author in collaboration with the reader, showing that he believes that they are all one and working together to achieve a common purpose.
Answer:
You haven't included a passage.
Explanation:
But based on how this is worded I think B is a likely choice.
Answer:
el ni el recomendado es de 5