Explanation:

Box 1: No
Azure Active Directory (Azure AD) is a cloud-based user identity and authentication service.
Box 2: Yes
Microsoft 365 uses Azure Active Directory (Azure AD). Azure Active Directory (Azure AD) is included with your Microsoft 365 subscription.
Box 3: Yes
Azure Active Directory (Azure AD) is a cloud-based user identity and authentication service.
Reference:
https://docs.microsoft.com/en-us/microsoft-365/enterprise/about-microsoft-365-identity?view=o365- worldwide