Final answer:
The nurse's response, 'You're upset?' is an example of reflecting, a therapeutic communication technique used by nurses.
Step-by-step explanation:
The nurse's response, 'You're upset?', is an example of reflecting. Reflecting is a therapeutic communication technique used by nurses to paraphrase or repeat the patient's statement. It helps the patient feel heard and encourages further discussion. In this case, the nurse is reflecting the patient's statement to validate their feelings.