**Core Concept**
The rupture of the uterus, also known as uterine rupture, is a serious and potentially life-threatening condition that occurs when there is a tear in the uterine wall, usually during pregnancy or childbirth. This can lead to severe bleeding, shock, and even maternal and fetal mortality.

**Why the Correct Answer is Right**
Uterine rupture typically occurs in women with a previous uterine scar, such as from a cesarean section or myomectomy. The risk of rupture is higher in women with a classical cesarean section, where the incision is made across the upper part of the uterus. The uterine muscle fibers are weaker in this area, making it more prone to rupture. The mechanism of rupture involves the tearing of the uterine wall, which can be due to the increased intrauterine pressure during labor, particularly in the presence of a previous scar.

**Why Each Wrong Option is Incorrect**
**Option A:** Uterine rupture can occur in women with a previous cesarean section, but it is not the only risk factor. While a previous cesarean section is a significant risk factor, it is not the only statement related to rupture uterus.
**Option B:** This statement is related to rupture uterus. Uterine rupture is indeed a potential complication of labor in women with a previous uterine scar.
**Option C:** This statement is related to rupture uterus. Uterine rupture is a serious condition that requires immediate medical attention, and prompt delivery of the baby is often necessary to prevent further complications.

**Clinical Pearl / High-Yield Fact**
In women with a previous uterine scar, it is essential to carefully monitor labor and consider performing a cesarean section if there are any signs of uterine rupture, such as severe abdominal pain, vaginal bleeding, or fetal distress.

**Correct Answer: A.**