What type of intervention does Devonia's assistant employ by not leaving her side?

The choice of preventative intervention is correct because it focuses on strategies aimed at preventing challenging behaviors before they occur. By not leaving Devonia's side, the assistant is actively taking steps to mitigate any potential difficulties or disruptions that Devonia might face in her environment. This hands-on approach creates a supportive atmosphere where the assistant can anticipate needs, reduce anxiety, and help Devonia navigate situations that may trigger undesired behaviors.

Preventative interventions aim to proactively address potential issues by providing guidance and support, which is exactly what is happening when the assistant remains close to Devonia. This method can help in promoting positive engagement and reducing the likelihood of negative behaviors arising. In this context, the assistant's presence serves as both a protective measure and a means of fostering a stable environment, which is critical for Devonia's learning and emotional well-being.