Which of the following directories is often used to store log files?

/home is reserved for user home directories and personal files, not system or application logs.

The /var directory is defined by the Filesystem Hierarchy Standard to hold variable data - files whose content is expected to change continually during normal system operation. Log files are stored under /var/log, and subdirectories such as /var/log/syslog and /var/log/messages are the standard locations for system logging daemons to write output.

/temp is not a valid standard Linux directory; the correct temporary directory is /tmp, which holds short-lived files, not logs.

/dev contains special device files that represent hardware and virtual devices, not log data.

/usr holds read-only user utilities, libraries, and application binaries, not runtime log data.