**Core Concept**
The question pertains to the incidence of rupture of classical cesarean section, a serious complication associated with this type of surgical incision. Classical cesarean sections involve a vertical incision in the upper segment of the uterus, which can increase the risk of uterine rupture in future pregnancies.

**Why the Correct Answer is Right**
The correct answer is based on the risk of uterine rupture associated with classical cesarean sections. The uterine scar from a classical incision can weaken the uterine wall, making it more susceptible to rupture during future pregnancies or labor. This is due to the vertical incision cutting through the strongest part of the uterus, the uterine muscle.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect as the incidence of rupture classical c-section varies widely depending on several factors, including the location and type of uterine incision, the number of previous cesarean sections, and the presence of any uterine abnormalities.
* **Option B:** This option is incorrect as the incidence of rupture classical c-section is not directly related to the parity of the patient, although multiple pregnancies may increase the risk of uterine rupture.
* **Option C:** This option is incorrect as the incidence of rupture classical c-section is not directly related to the gestational age of the fetus, although preterm labor may increase the risk of uterine rupture.

**Clinical Pearl / High-Yield Fact**
A classical cesarean section incision is associated with a higher risk of uterine rupture in future pregnancies, and patients with a history of classical cesarean sections should be counseled about this risk and managed accordingly.

**Correct Answer: D. 0.2-0.5%**