Refer to the exhibit. An engineer is trying to configure local authentication on the console line, but the device is trying to authenticate using TACACS+. Which action produces the desired…

Adding `aaa authentication login default group tacacs+ local-case` would make TACACS+ the primary authentication method for the default list, which would worsen the problem if the console is still using the default method.

By default, console lines may inherit a global AAA authentication method, such as `default`, which might be configured to use TACACS+. Applying `login authentication Console` within the `line con 0` configuration directs the console to specifically use the named authentication list 'Console', which should be defined globally as `aaa authentication login Console local` to achieve local authentication.

AAA list names are case-sensitive. Changing 'Console' to 'console' would reference a different, potentially undefined, authentication list and would not resolve the issue of the console attempting TACACS+.

Adding `aaa authentication login default none` would disable all authentication for any line using the default method, allowing unauthenticated access, which is a significant security risk and not the desired local authentication.