Answer:
B. emotion regulation
Explanation:
Emotion regulation refers to an ability to delay a natural response in order to show an adjusted response that is intended to create a certain perception.
This can be seen in the example above.
The natural response for the person who sit in the chair and burnt would most likely to be panicked and anxious. But these performers understand that the audiences will find the performance off putting if they do that, so they use their emotion regulation to create a perception that they're calm and unaffected.