Where do you configure the link between an HR Service and a specific HR Case template?
The HR Service record holds the Case Template field, which defines the default template applied when that service generates a case. Configuring the link there satisfies the requirement, since templates themselves carry no reference back to services.
Why this answer
The HR Service record is where you configure the link to a specific HR Case template, because the HR Service defines the service offering and its associated case template determines the fields, tasks, and workflow used when a case is created for that service. On the HR Service form, the 'Case template' field references the HR Template record that should be applied. This is the standard configuration point in HR Service Delivery.
Exam trap
CIS-HR often tests the confusion between the HR Template record (which defines template content) and the HR Service record (which links to the template), causing candidates to pick the template as the configuration point.
How to eliminate wrong answers
Option A is wrong because a Record Producer is a catalog item that creates a record (such as an HR case) but does not itself define the link between an HR Service and a case template — it may reference an HR Service, but the template linkage lives on the HR Service. Option B is wrong because an Assignment Rule determines who is assigned to a record based on conditions; it has nothing to do with case template selection. Option C is wrong because the HR Template record defines the template content (fields, tasks) but the association to a specific HR Service is configured on the HR Service record, not the template.