Final answer:
The example of active listening by the assistant is option 1) "I understand how frustrating it can be to wait for a long time. Let me check with the doctor and see if I can expedite your appointment."
Step-by-step explanation:
The example of active listening by the assistant in this scenario is option 1) "I understand how frustrating it can be to wait for a long time. Let me check with the doctor and see if I can expedite your appointment." Active listening involves fully engaging with the person speaking, understanding their emotions, and showing empathy. In this response, the assistant acknowledges the frustration of waiting and offers to take action by checking with the doctor to see if they can help. This demonstrates active listening skills and a willingness to address the patient's concerns.