Which of the following is a common result of pelvic inflammatory disease?

Pelvic inflammatory disease (PID) is an infection of the female reproductive organs that can lead to serious long-term complications. One of the common results of PID is infertility. The condition may cause scarring and damage to the fallopian tubes, making it difficult for sperm to reach an egg or for a fertilized egg to reach the uterus. The inflammation and possible blockage of the tubes significantly increase the risk of infertility.

The other options listed, while they are related to reproductive health, do not directly stem from PID in the same manner. Cervical cancer is primarily associated with infections like HPV rather than PID itself. Endometriosis involves the growth of tissue similar to the uterine lining outside of the uterus and is not a direct consequence of PID. Ovarian cysts may be common in women and can occur for various reasons, but they are not a direct result of pelvic inflammatory disease. Thus, infertility stands out as the most significant consequence of PID due to its direct impact on the reproductive system.