Final answer:
The report by the patient that would immediately concern the nurse is gaining 10 pounds in the last 3 months.
Step-by-step explanation:
The report by the patient that would immediately concern the nurse is b. Gaining 10 pounds in the last 3 months. Weight gain can be a potential side effect of hormone replacement therapy (HRT), but a significant weight gain of 10 pounds in just 3 months may indicate a potential issue with the therapy or an underlying health problem. The nurse should further investigate the patient's symptoms and consult with the healthcare provider to address any concerns.