Final answer:
The most appropriate next step in this patient's care is colposcopy.
Step-by-step explanation:
The most appropriate next step in this patient's care is D. Colposcopy.
Colposcopy is a diagnostic procedure that allows a healthcare provider to closely examine the cervix, vagina, and vulva for any abnormal changes. This procedure can help determine the extent of abnormal cervical cells and guide further management.