Final answer:
To create a positive and professional work environment, leaders should promote a positive attitude, lead by example, and establish clear communication channels.
Step-by-step explanation:
In order to create a positive and professional work environment, there are several leadership behaviors that can be influential. First, leaders can promote a positive attitude and encourage a team-oriented mindset. This involves being supportive, fostering collaboration, and recognizing and rewarding team members' achievements. Second, leaders should lead by example and demonstrate professionalism through their own behavior, such as being respectful, ethical, and accountable. Finally, leaders can establish clear communication channels and encourage open dialogue, which helps to create a transparent and inclusive work environment.