Select the combination that correctly matches both columns (Either structurally, functionally , or based on location).
`{:(,"Column-I",,"Column - II"),((I),"Fovea centralis",(i),"Inner ear"),((II),"Perilymph",(ii),"Blindspot"),((III),"Vitreous humor",(iii),"Vestibular membrane"),((IV),"Reissner's membrane",(iv),"Gelatinous tissue"):}`

Options

A. I - i, II - ii , III - iii, IV - iv
B. I - iv, II - iii , III - ii, IV - i
C. I - ii, II - i , III - iv, IV - iii
D. I - iii, II - iv , III - i, IV - ii

Answer

To solve the question, we need to match the items from Column I with the correct items from Column II based on their structural, functional, or locational characteristics.

### Step-by-Step Solution:

1. **Fovea Centralis**:
- The fovea centralis is a small pit located in the retina of the eye. It is known for being the point of sharpest vision and is not the same as the blind spot. The blind spot is located about 15 degrees on the nasal side of the fovea. Therefore, we can match:
- **Fovea Centralis (I)** with **Blindspot (ii)**.

2. **Perilymph**:
- Perilymph is the fluid found in the inner ear, specifically in the space between the bony labyrinth and the membranous labyrinth. Thus, we can match:
- **Perilymph (II)** with **Inner Ear (i)**.

3. **Vitreous Humor**:
- The vitreous humor is a clear, gel-like substance that fills the space between the lens and the retina in the eyeball. It is not located in the cochlea of the inner ear, but rather in the eye. Therefore, it does not match with gelatinous tissue in the inner ear. Thus, we cannot match:
- **Vitreous Humor (III)** with **Gelatinous Tissue (iv)**.

4. **Reissner's Membrane**:
- Reissner's membrane, also known as the vestibular membrane, is a membrane in the cochlea of the inner ear. Therefore, we can match:
- **Reissner's Membrane (IV)** with **Vestibular Membrane (iii)**.

### Summary of Matches:
- Fovea Centralis (I) → Blindspot (ii)
- Perilymph (II) → Inner Ear (i)
- Vitreous Humor (III) → Not applicable
- Reissner's Membrane (IV) → Vestibular Membrane (iii)

### Final Correct Matches:
1. Fovea Centralis (I) - Blindspot (ii)
2. Perilymph (II) - Inner Ear (i)
3. Reissner's Membrane (IV) - Vestibular Membrane (iii)

**Correct Combination**:
- (I) with (ii)
- (II) with (i)
- (IV) with (iii)