Apple Certified Support Professional Practice Test

When a user resets their password, signing back into their iCloud account is a critical step to regain access to saved information, particularly data that is stored in iCloud Keychain. iCloud Keychain stores passwords, credit card information, and other sensitive data, which are linked to the user's Apple ID. After a password reset, the user must re-authenticate their Apple ID to regain access to this saved info.

This step is essential because iCloud serves as a synchronization service allowing users to access their data across multiple devices. If a user does not sign back into their iCloud account after a password reset, they will not be able to retrieve saved passwords or other data that was synced before the reset.

In contrast, options such as deactivating iCloud, manually accessing Keychain, or logging out of all devices do not facilitate the recovery of saved information. Deactivating iCloud would prevent access to synced data, manually accessing Keychain is not necessary if the account is signed back in, and logging out of all devices can lead to further complications rather than assisting in regaining access.