Which of the following master roles is used for synchronizing cross-domain group membership
changes?

A.
Domain Naming Master role

B.
Infrastructure Master role

C.
Schema Master role

D.
RID Master role

Explanation:
The Infrastructure Master role is used for synchronizing cross-domain group membership changes.
modifications to the Active Directory schema.
removal of domains from the forest if they are present in the root domain.
domain controllers for use when creating objects.