Answer:
Custom domains are generally available for enterprise Office 365 subscriptions designed for businesses and organizations. Option (4) is true.
Step-by-step explanation:
Custom domains are typically available for Office 365 subscriptions that are designed for businesses, organizations, and enterprises.
In an enterprise environment, businesses often require the ability to use their own custom domain names for email addresses and other services.
This feature allows organizations to have email addresses that reflect their domain rather than using the default domain provided by the email service.
Small Business O365 plans and Enterprise O365 plans usually cater to businesses and organizations, providing features like custom domains to meet the specific needs of these users.
Home Premium O365 and Personal O365 plans are more geared towards individual users and may not include the same level of business-oriented features, including the ability to use custom domains.
Keep in mind that the specific features and offerings can vary between different versions and plans within the Office 365 suite, so it's always a good idea to check the details of a particular subscription plan for accurate information.
Thus, Custom domains are generally available for enterprise Office 365 subscriptions designed for businesses and organizations. Option (4) is true.