Universal Container have various product order information stored on external database and they want to be able to view order information as related list on each account within salesforce. Which functionality will allow the salesforce admin to achieve this request?

Answer options:

A.Workflow Rule
B.Salesforce Connect
C.Process Builder
D.Formula field

Correct Answer: B 
Salesforce connect will allow the setup between the parent account object and the child external object for orders. 
Options A, C & D are incorrect because they don’t have the ability to connect to external objects. 

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