Final answer:
Andrew, as the Teams Administrator, should use the Azure Active Directory Admin Center to configure the naming policy for Microsoft 365 Groups as it governs the policies for group names across Microsoft services.
Step-by-step explanation:
If Andrew is the Teams Administrator in Contoso Ltd and needs to configure the naming policy for Microsoft 365 Groups, he should use the C) Azure Active Directory Admin Center. The reasoning behind this is that Microsoft 365 Groups naming policies are managed through Azure Active Directory (Azure AD), which provides the rules and restrictions that govern names of groups created by users across Microsoft services, including Teams. The naming policy can include prefixes, suffixes, blocked words, and other naming requirements to conform to company standards.