**Core Concept**
The retina is a complex neural tissue at the back of the eye, consisting of multiple layers that facilitate visual processing. Understanding the anatomy of the retina is crucial for diagnosing and managing various eye disorders.

**Why the Correct Answer is Right**
The correct answer is B because the layer of the retina in contact with the vitreous is actually the internal limiting membrane (ILM), which is a thin, acellular layer that separates the retina from the vitreous humor. The retinal pigment epithelium (RPE) is actually the layer in contact with the choroid, not the vitreous. The RPE plays a crucial role in maintaining the health of the photoreceptors, while the ILM is a critical structure in the pathogenesis of retinal detachment.

**Why Each Wrong Option is Incorrect**
**Option A:** This statement is incorrect because most of the layers of the retina are actually present at the fovea, which is a specialized area of high visual acuity. The fovea is characterized by a high concentration of photoreceptors and a thinning of the retinal layers.
**Option C:** This statement is incorrect because the posterior pole of the eye actually consists of the optic nerve head, macula, and fovea, not just the optic nerve head and macula.
**Option D:** This statement is incorrect because the fovea does have a zone with no blood supply, known as the foveal avascular zone (FAZ). However, this is not the primary reason why the statement is incorrect; rather, it is the incorrect identification of the layer in contact with the vitreous.

**Clinical Pearl / High-Yield Fact**
The internal limiting membrane (ILM) is a critical structure in the pathogenesis of retinal detachment, which is a common complication of various eye disorders. Understanding the anatomy of the retina, including the ILM, is essential for diagnosing and managing retinal detachment and other eye conditions.

**✓ Correct Answer: B. The layer of retina in contact with vitreous is retinal pigment epithelium**