Universal Container’s Salesforce Admin user has Salesforce as the identity provider for one of the connected apps. What will happen when the Salesforce Admin user logs out of Salesforce with a single logout?

Answer options:

A.The user will stay logged in to the connected apps
B.The user will be automatically logged out of the connected apps
C.Salesforce has single sign on only, it doesn’t have single logout option
D.Single logout doesn’t interfere with connected apps

Correct Answer: B 
Using single logout, users will be automatically logout from all the connected apps when he logs out of the Salesforce. This single logout feature can increase security and usability. So, once a user logs out from a single application, all other application will automatically log the user out. 
Option A is incorrect because users can’t stay logged in to the connected apps. With the single logout, users are logged out of all connected apps. 
Option C is incorrect because Salesforce has both single sign in and single logout. 
Option D is incorrect because single logout is related to the connected apps. 
Reference: 

https://help.salesforce.com/articleView?id=slo_about.htm&type=5