Professor Aguillera is enraged that a student is texting on his cell phone in class. He really wants to scream at the student. But keeping his upcoming teaching evaluations in mind, Professor Aguillera casually looks at the student and tells him to put the phone away. Which display rule for emotional expression does this example illustrate

De-intensification

Explanation:

In simple words, de-intensification can be understood as the emotional display rule under which the individual subject to extreme emotions holds himself or herself back to not look weak or awkward in any way. This rule is applied to control emotions in extreme case like happiness while getting married or getting angry while someone is yelling at you etc.