Allow console login to drop directly into privileged EXEC without using AAA. Which action achieves this?

Configuring privilege level 15 on line con 0 directly sets the console port to drop into privileged EXEC mode upon login. Privilege level 15 is the highest privilege level, granting full administrative access. Using a RADIUS or TACACS+ server with privilege level assignment would work, but the question specifically asks to achieve this without using AAA. Configuring login authentication privileged on the console line would still require a local username and password, and would not bypass the need for authentication to reach privileged EXEC. Configuring a local username with privilege level 15 would allow that specific user to log in directly to privileged EXEC, but it doesn't apply to any console login, and still requires authentication.