Final answer:
The Administrator account cannot be deleted, is visible on the sign-in screen, and can be locked out.
Step-by-step explanation:
The characteristics that apply to the Administrator account are:
- It cannot be deleted: The Administrator account is a built-in account that cannot be removed from a system.
- It is visible on the sign-in screen: The Administrator account is typically displayed as an option for users to select during the sign-in process.
- It can be locked out: Just like any other user account, the Administrator account can also be locked out if there have been multiple failed login attempts or if the account has been intentionally locked by an administrator.