Final answer:
Patients who fidget constantly, remain silent between questions, and avoid eye contact while being asked questions may be showing signs of information overload.
Step-by-step explanation:
Observable behaviors that may indicate a nurse that a patient is experiencing information overload include fidgeting constantly while seated in the chair, a period of silence noted between questions, and the patient scanning the environment avoiding eye contact while the nurse is attempting to ask questions. These behaviors can show signs of discomfort, distraction, and difficulty in processing new information due to feeling overwhelmed. It is important for the nurse to pay attention to these non-verbal cues and possibly adjust their communication strategy, simplifying the information or giving the patient more time to process and respond.