In which of the following situations is a teacher most clearly obligated to report the incident to a supervisor or the authorities?
O A teacher detects the odor of marijuana on a student in the school parking lot at the end of the school day.
O A teacher overhears two female students in the hallway discussing one girl's interest in dating an older male student.
O A teacher notices that a usually outstanding writing student misunderstood the directions for an assignment and received a poor grade.