The security administrator is analyzing a user's history file on a Unix server to determine if the user was attempting to break out of a rootjail. Which of the following lines in the user's history…

A chroot rootjail restricts a process to a subdirectory, treating it as the filesystem root. The command 'cd ../../../../bin/bash' attempts directory traversal by moving up multiple parent directories to reach the actual system root and then access a real shell binary, which is the canonical technique for escaping a poorly configured chroot environment.

'whoami' simply queries the current user identity and provides no information about an attempt to change filesystem scope or escalate privileges.

'ls /root' attempts to list the root user's home directory, which may indicate reconnaissance but does not indicate an attempt to break out of a jailed environment.

'sudo -u root' attempts privilege escalation to the root user account but does not attempt to escape the restricted filesystem boundary imposed by a chroot jail.