Under which condition can Universal Container’s Salesforce Admin assign approval requests to a queue?

Answer options:

A.This is not possible
B.When the associated object supports a queue
C.When we do the set up through the case assignment queue
D.Through a workflow rule

Correct Answer: B 
Salesforce approval requests can be assigned to a queue if the associated object supports a queue. 
Option A is incorrect. This is possible if the associated object supports a queue. 
Option C is incorrect because the setup needs to be done through the associated object. 
Option D is incorrect because workflow rule is an automation process and it`s different from a queue. 
Reference: 

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