Credential managers or password vaults (e.g., Windows Credential Manager, KeePass, or LastPass) store passwords securely. The integrity of such tools heavily depends on the strength of the master password protecting the vault. If compromised, all saved credentials could be exposed. Therefore, setting a secure master password is crucial.

A. Login time restrictions are general user account settings, not specific to credential managers.

C. TPM is used more commonly for full disk encryption, not specifically required for password managers.

D. The lock screen protects general access but does not protect stored credentials alone.