Not correct. Off boarding is the answer. Campus can be closed on the weekends or even at night at 2am. It does not say before the first day of the semester. Is says while the campus is closed. Account expiration makes no since, if he was offboarded correctly then his account would have been disabled. GAGC has the exact question and it is B 100% sure.

Offboarding isnt going to fix it because he did it before resigning. Time of day restrictions won't fix it because he shouldn't have had access to delete the shares in the first place so he could still do it within that time of day restriction and account experation isnt going to matter because it was done before he quit. The issue here is the delete access he has to shares that he should not have. You could have caught the issue and prevented it with a permission audit and review

I concur with C. Time of day. Had they restricted logins during the holiday, this would have been prevented.
Although permission auditing and review could have prevented him from deleting files and folders outside of his home directory, the scenario doesn't specify if he deleted his own files or someoneelse's. If it were his own, then a permission audit would not have prevented this.
It can't be offboarding because he did it before resigning.
Account expiry? Good one too, but unlikely since he was still employed.

The answer is C

This is b.s

Its D