Which scenario is an example of the balance approach when it comes to keeping an environment safe?

Jasmine's principal uses K-9 dogs to search students and staff on campus, which breeds fear.
Erin's school is prepared and not overwhelmed by the safety guidelines they have to abide by.
The teachers at Miranda's school complain about duty stations and often do not go.
The students at Madison's school are fearful about the new safety guidelines that were introduced today.