The correct answer is Spotlighting
In this situation the word "stop" was said with emphasis, this is characterized as a highlight in non-verbal communication.
The need for non-verbal or verbal communication is innate to human beings.
Since the dawn of society, our ancestors have sought to find ways to interact. Even before there was a structured language, both spoken and written, communication was done through symbols and gestures. And, to this day, we use this communication, even when we are not aware of it.
Non-verbal communication says so much about who we are and how we think it is necessary to be attentive so as not to damage your relationships, professional or personal, by transmitting wrong messages.