Q. A 49-year-old woman comes to her gynecologist for hot flashes for the past 4 months. She complains that she gets a sudden sensation of heat on her face that rapidly spreads all over her body. It lasts for around 2 minutes followed by sweating. She gets it at least once per day. Recently her sleep has been disturbed because of these hot flashes occurring at night. She does not have any complaints of fever, diarrhea, or weight loss. She does exercise and yoga regularly. Her recent annual examination was unremarkable with normal lab values. Her past history shows that she underwent a hysterectomy for fibroids 5 years ago. She shows interest in using hormone replacement therapy to get rid of her symptoms and improve her quality of life. Her temperature is 98.6°F (37°C), pulse is 82/min, blood pressure is 120/80 mmHg, and respirations are 14/min. BMI is 22 kg/m2. Physical examination is unremarkable. Breast examination is normal. Which of the following option is most appropriate for her management?