**Core Concept**
Disseminated intravascular coagulation (DIC) is a complex condition characterized by the systemic activation of the coagulation cascade, leading to the formation of numerous microthrombi throughout the microcirculation. This results in a paradoxical consumption of clotting factors and platelets, ultimately causing a coagulopathy.

**Why the Correct Answer is Right**
DIC in the context of abortion is most commonly associated with **retained products of conception**. The presence of retained tissue serves as a continuous source of thromboplastin, triggering a cascade of coagulation reactions. The activation of the extrinsic pathway of coagulation, mediated by tissue factor, leads to the formation of thrombin and subsequent clot formation. The widespread microthrombi formation and subsequent depletion of clotting factors and platelets result in a consumptive coagulopathy, characteristic of DIC.

**Why Each Wrong Option is Incorrect**
**Option A:** Although infections can be a cause of DIC, they are not the most common association in cases of abortion.

**Option B:** Amniotic fluid embolism is a known cause of DIC, but it is more commonly associated with complications of labor rather than abortion.

**Option C:** Thrombophilias are a risk factor for thrombotic disorders, but they are not directly associated with the development of DIC in cases of abortion.

**Clinical Pearl / High-Yield Fact**
DIC can be triggered by a variety of conditions, including trauma, sepsis, and malignancy. However, in the context of pregnancy, retained products of conception are the most common cause of DIC.

**Correct Answer: C. Thrombophilias. Amniotic fluid embolism. Retained products of conception.**