I believe the answer is Pupils narrow
When people are confronted with stressful situations, our pupils will dilated, not narrowed.
When this happen, our body will enter a fight-or-flight situation, which would be determine on our personal assessment towards whether we could handle the outcome of the situation.
Answer:
Set the classroom rules at the start of the year.
Have consistent expectations.
Set goals at the beginning of class.
Appropriate behavior should be reinforced.
Remain neutral during conflicts.
Search for the root cause of the misbehavior.
Student dignity matters.
Create individual plans for students.
Answer:
it starts in the air then it bounces of water which is refraction