**Core Concept**
The development of the eye, or **eye morphogenesis**, is a complex process involving the formation of the optic cup, lens, and other ocular structures. This process is crucial for the proper formation and function of the eye. **Embryonic development** plays a key role in this process.

**Why the Correct Answer is Right**
The correct answer is not provided, however, eye morphogenesis typically starts around the third week of gestation. During this time, the **neuroectoderm** folds in to form the **optic cup**, which will eventually give rise to the retina and other eye structures. The **lens placode** also forms during this period, eventually developing into the lens of the eye.

**Why Each Wrong Option is Incorrect**
**Option A:** Without the specific details of option A, it's difficult to provide a precise explanation.
**Option B:** Similarly, without option B's details, an accurate assessment cannot be made.
**Option C:** And option C's incorrectness is also dependent on its specifics.
**Option D:** The same applies to option D.

**Clinical Pearl / High-Yield Fact**
A key point to remember is that any disruptions during **eye morphogenesis** can lead to congenital eye abnormalities. Understanding the timeline and processes involved in eye development is crucial for diagnosing and managing these conditions.

**Correct Answer:** Correct Answer: D. 3rd week of gestation