Identify the scenario in which the RBT is NOT behaving professionally.

In this scenario, Jillian's emotional state after a personal issue can influence her professional demeanor and the quality of her work. As an RBT, it is crucial to maintain a professional attitude, especially when working with clients. Personal issues, such as a fight with a roommate, can detract from the focus and emotional availability needed to support clients effectively.

Professionals in the field are expected to manage their emotions and personal matters in ways that do not interfere with their work responsibilities. While everyone has personal challenges, it's important for practitioners to ensure that they can separate these from their professional duties, upholding the ethical standards of behavior that promote a safe and supportive environment for clients.

The other scenarios depict professional behaviors: collaboration with colleagues enhances team strategies, reviewing treatment plans ensures proper implementation and understanding of client needs, and assisting new staff members demonstrates a commitment to professional development and teamwork. Each of these reflects a dedication to the ethical and effective provision of services, which is fundamental in the field of behavioral therapy.