An administrator must configure identity access for VMware vSphere Foundation (VVF) to allow admin accounts...

To allowActive Directory domain users(corp.local) to authenticate in vCenter with domain credentials:

The correct method is configuringActive Directory over LDAP as an identity source. (D)

This uses thedefault AD protocol (LDAP/Kerberos)without requiring SAML or OIDC federation.

Other options:

A. Adding domain controller certificate→ Needed for LDAPS but not the main step.

B. Identity Federation with SAML→ Requires federation, not allowed per requirements.

C. OpenID Connect (OIDC)→ Used for external IdPs, not traditional AD auth.