**Core Concept**
Gartner's duct cyst, also known as a paraovarian cyst, is a benign, congenital anomaly that arises from the remnants of the Wolffian duct (mesonephric duct). The Wolffian duct is a paired embryonic structure that is crucial in the development of the male reproductive system.

**Why the Correct Answer is Right**
Gartner's duct cysts are thought to originate from the persistent remnants of the Wolffian duct, which are usually obliterated in the female embryo. These cysts are typically located near the ovary, fallopian tube, or uterus, and their development is influenced by the presence of Müllerian inhibiting substance (MIS), which promotes the regression of the Wolffian duct. The formation of Gartner's duct cysts is considered a developmental anomaly, and they are often asymptomatic unless they become large enough to cause abdominal discomfort or other symptoms.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is not relevant to the origin of Gartner's duct cyst.
**Option B:** This option is incorrect as Gartner's duct cyst arises from the Wolffian duct, not the Müllerian duct.
**Option C:** This option is not accurate, as Gartner's duct cyst is a benign, congenital anomaly and not a neoplastic process.

**Clinical Pearl / High-Yield Fact**
Gartner's duct cysts are often asymptomatic and may be detected incidentally during imaging studies. They can be distinguished from other types of ovarian cysts based on their location and imaging characteristics.

**Correct Answer:** D.