**Core Concept**
Genital prolapse is a condition characterized by the descent or protrusion of the pelvic organs, including the bladder, uterus, and vagina, due to weakened pelvic floor muscles and supporting tissues. This condition is often associated with childbirth, menopause, and chronic coughing.

**Why the Correct Answer is Right**
The most common type of genital prolapse is the cystocele, which involves the herniation of the bladder into the vagina. This occurs when the supportive fascial layers between the bladder and the vagina are weakened, allowing the bladder to bulge into the vaginal space. The exact mechanism involves the loss of integrity of the endopelvic fascia and the pubocervical fascia, which normally supports the bladder.

**Why Each Wrong Option is Incorrect**
* **Option A:** Urethrocele is a type of genital prolapse, but it is less common than cystocele. Urethrocele involves the herniation of the urethra into the vagina.
* **Option B:** Enterocele is another type of genital prolapse, but it is not the most common. Enterocele involves the herniation of the small intestine into the vagina.
* **Option D:** Rectocele is a type of pelvic organ prolapse, but it involves the herniation of the rectum into the vagina, not the bladder.

**Clinical Pearl / High-Yield Fact**
Cystocele is often associated with symptoms such as urinary frequency, urgency, and incontinence. A thorough physical examination, including a pelvic examination, is essential for diagnosing cystocele.

**Correct Answer: C. Cystocele**