**Core Concept**
Uterine malformations can lead to recurrent miscarriages due to anatomic abnormalities affecting implantation, placentation, and fetal growth. The most common uterine malformation is a unicornuate uterus, which is a developmental anomaly resulting from abnormal Mullerian duct fusion.

**Why the Correct Answer is Right**
The unicornuate uterus is a congenital anomaly where one Mullerian duct fails to develop, resulting in a single, smaller uterus. This malformation often leads to recurrent miscarriages, preterm labor, and fetal growth restriction. The unicornuate uterus has a higher risk of associated anomalies such as renal agenesis and rudimentary horn. The reduced uterine volume and abnormal uterine shape can impede implantation, placentation, and fetal growth.

**Why Each Wrong Option is Incorrect**
**Option A:** **Septate Uterus** is another common uterine malformation but is less likely to be associated with recurrent miscarriages compared to unicornuate uterus. Septate uterus is characterized by a thin, fibrotic septum dividing the uterus.
**Option B:** **Uterine Didelphys** is a rare condition where the uterus is duplicated, but this condition is less common and often not associated with recurrent miscarriages. Uterine didelphys is characterized by two separate uteri, each with its own cervix and vagina.
**Option C:** **Bicornuate Uterus** is a congenital anomaly resulting from incomplete fusion of the Mullerian ducts, but it is less commonly associated with recurrent miscarriages compared to unicornuate uterus.

**Clinical Pearl / High-Yield Fact**
Uterine malformations are a significant cause of recurrent miscarriages, and a detailed ultrasound evaluation is crucial in diagnosing these conditions. The American Society for Reproductive Medicine (ASRM) recommends a thorough evaluation of uterine anatomy in women with recurrent miscarriages.

**Correct Answer:** C. Bicornuate Uterus