Final answer:
Jonathan should show interest by leaning forward and maintaining good eye contact, ask questions when unsure, and take notes during conversations with his supervisor.
Step-by-step explanation:
When listening to his supervisor, Jonathan should show his interest by leaning forward and striving for good eye contact. This nonverbal communication technique demonstrates that he is actively engaged and attentive to what the supervisor is saying. It also shows a level of respect and professionalism.
Additionally, Jonathan should ask questions when he is unsure about instructions or protocols. Asking questions not only helps clarify any uncertainties but also shows his willingness to learn and develop professionally. It is important to note that asking questions should be done in a respectful and professional manner.
Finally, Jonathan should consider taking notes during conversations with his supervisor. This demonstrates that he values the information being shared and wants to ensure accuracy and retention. These notes can serve as a reference point for future discussions or tasks.