An administrator has logged in as root but is unable to run the ksh script named rperf. Given the following information, how could this be fixed?

Parent directory execute permission controls the ability to traverse or search the directory, not to execute files within it; the script file itself must have the execute bit set.

Changing ownership to root is irrelevant when already running as root and does not address missing execute permissions on the file.

AIX and Linux do not use file extensions to determine executability; only the execute permission bit in the inode controls whether a file can be run.

Setting permissions to 700 (rwx------) grants the file owner read, write, and execute permissions, which is the minimum required for the owner to run the script directly. In AIX and Linux, the execute bit must be explicitly set on a file - even root cannot invoke a script by name without it, though root can bypass read/write restrictions.