Answer:
A: Human papillomavirus
Explanation:
Human papillomavirus, otherwise known as HPV, is a common sexually transmitted disease. Given the sexual history of the patient, it is likely she has this disease, which can be transmitted through unprotected sex.
Unfortunately, HPV is not curable, however there are some vaccines available that can prevent genital warts and cervical cancer from developing. Some people have the virus but do not display any symptoms, so they can transmit the disease unknowingly.
