**Core Concept**
The lateral geniculate nucleus (LGN) is a critical structure in the visual pathway, receiving inputs from the retina and projecting to the primary visual cortex. The LGN is organized into six distinct layers, each with a specific function and input pattern. The nasal hemiretina, which receives input from the contralateral visual field, projects to specific layers of the LGN.

**Why the Correct Answer is Right**
The contralateral nasal hemiretina projects to layers 1, 4, and 6 of the LGN. This is because the nasal hemiretina contains magnocellular and parvocellular neurons that convey information from the contralateral visual field. Layers 1 and 6 of the LGN receive input from the magnocellular pathway, which is responsible for detecting low-contrast, high-speed visual stimuli. Layer 4 of the LGN receives input from the parvocellular pathway, which is responsible for detecting high-contrast, high-resolution visual stimuli. This specific pattern of input allows the LGN to process and transmit visual information from the contralateral visual field.

**Why Each Wrong Option is Incorrect**
**Option A:** Layers 2, 3, and 5 are not the correct targets for the contralateral nasal hemiretina. These layers receive input from the ipsilateral temporal hemiretina, which is responsible for detecting visual stimuli from the ipsilateral visual field.

**Option B:** Layers 1, 2, and 6 do not accurately represent the correct layers for the contralateral nasal hemiretina. While layers 1 and 6 are correct, layer 2 receives input from the ipsilateral nasal hemiretina.

**Option D:** Layers 4, 5, and 6 are not the correct targets for the contralateral nasal hemiretina. While layer 4 is correct, layers 5 and 6 receive input from the ipsilateral temporal hemiretina.

**Clinical Pearl / High-Yield Fact**
It is essential to remember that the LGN is organized into six distinct layers, each with a specific function and input pattern. This knowledge is critical for understanding visual processing and transmission in the brain.

**✓ Correct Answer: C. Layers 1,4 & 6.**