Which vRealize Automation service must the administrator use to complete this task?

An administrator needs to create a custom form for a cloud template that has just been created. One of the form input fields needs to be a drop-down that is populated through an external source.

Which vRealize Automation service must the administrator use to complete this task? (Choose the best answer.)
A . Service Broker
B . Orchestrator
C . Cloud Assembly
D . Code Stream

Answer: A

Explanation:

Reference: https://docs.vmware.com/en/vRealize-Automation/8.4/Using-and-Managing-Service-Broker/GUID-7ED61233-1167-4BD6-AEAA-0F7F9F9C6BD9.html