CompTIA Linux+ (XK0-005) XK0-005 — Question 217

A Linux user is trying to execute commands with sudo but is receiving the following error: $ sudo visudo >>> /etc/sudoers: syntax error near line 28 <<< sudo: parse error in /etc/sudoers near line 28 sudo: no valid sudoers sources found, quitting The following output is provided: # grep root /etc/shadow root:*LOCK*:14600:::::: Which of the following actions will resolve this issue?