Match the following and choose the correct combination from the options.
`{:("Column - I","Column - II"),("A Potassium","(i) Constituent of ferredoxin"),("B Sulphur","(ii) Involved in stomatal movement "),("C Molybdenum","(iii) Auxin synthesis"),("D Zinc","(iv) Component of nirogenase"):}`

Options

A. A -ii, B - i, C -iv , D - iii
B. A -i, B - ii, C -iii , D - iv
C. A -iv, B - iii, C -ii, D - i
D. A -ii, B - iii, C -iv , D - i

Answer

To solve the matching question, we will analyze each item in Column I and determine its corresponding function in Column II.

### Step-by-Step Solution:

1. **Identify the first element: Potassium (A)**
- Potassium is known to be involved in the opening and closing of stomata, which is crucial for gas exchange in plants.
- **Match:** A (Potassium) → (ii) Involved in stomatal movement.

2. **Identify the second element: Sulphur (B)**
- Sulphur is a key component of certain proteins and is also a constituent of ferredoxin, which is involved in electron transport in photosynthesis.
- **Match:** B (Sulphur) → (i) Constituent of ferredoxin.

3. **Identify the third element: Molybdenum (C)**
- Molybdenum is an essential component of nitrogenase, the enzyme responsible for the fixation of atmospheric nitrogen into a usable form for plants.
- **Match:** C (Molybdenum) → (iv) Component of nitrogenase.

4. **Identify the fourth element: Zinc (D)**
- Zinc plays a role in the synthesis of auxins, which are important plant hormones involved in growth and development.
- **Match:** D (Zinc) → (iii) Auxin synthesis.

### Final Matches:
- A → (ii) Involved in stomatal movement
- B → (i) Constituent of ferredoxin
- C → (iv) Component of nitrogenase
- D → (iii) Auxin synthesis

### Summary of Matches:
- A (Potassium) → (ii)
- B (Sulphur) → (i)
- C (Molybdenum) → (iv)
- D (Zinc) → (iii)

### Correct Combination:
The correct combination based on the matches is:
- A → (ii)
- B → (i)
- C → (iv)
- D → (iii)