Final answer:
When adding a calendar to view, 'From Internet', 'From Address Book', and 'From Room List' are typically valid options. However, 'From Contacts' is not typically a valid option as contacts don't usually have associated calendar events.
Step-by-step explanation:
When adding a calendar to view, generally you would have various valid options depending on the specific application you're using. Still, in most cases, the common options include 'From Internet' which allows you to import an existing online calendar, or 'From Address Book' which populates the calendar based on dates and events stored in your address book. It's also common to find the option 'From Room List', which is typically used in a business context for scheduling resources within an organization.
However, 'From Contacts' is typically not a valid option as contacts are not generally associated with calendars. Contacts are usually individuals with whom you interact but don't necessarily have events listed in your calendar. Thus, 'From Contacts' would not generally be considered a valid option for adding a calendar to view.
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