Match column I with column II and select the correct answer from the given codes.
`{:(Column I,Column II),(A."Ganga action plan",(i)N_(2) "fixing cyanobacterium"),(B."Bt cotton",(ii)"Ministry of environment and forests"),(C."Rhizobium",(iii)"Insect resistant plant"),(D."Nostoc",(iv)N_(2)"fixing bacterium"):}`

Options

A. `A-(ii),B-(iii),C-(iv),D-(i)`
B. `A-(iii),B-(i),C-(iv),D-(i)`
C. `A-(ii),B-(iv),C-(iii),D-(i)`
D. `A-(i),B-(iii),C-(ii),D-(iv)`

Answer

To solve the matching question between Column I and Column II, we will analyze each item in Column I and find its corresponding match in Column II step by step.

### Step-by-Step Solution:

1. **Identify Ganga Action Plan (A)**:
- The Ganga Action Plan was launched in 1986 by the Ministry of Environment and Forests to improve the water quality of the Ganga River.
- **Match**: (A) Ganga Action Plan → (ii) Ministry of Environment and Forests.

2. **Identify Bt Cotton (B)**:
- Bt Cotton is a genetically modified plant that is resistant to insects. It contains genes from the bacterium Bacillus thuringiensis, which acts as a biological pest control agent.
- **Match**: (B) Bt Cotton → (iii) Insect Resistant Plant.

3. **Identify Rhizobium (C)**:
- Rhizobium is a nitrogen-fixing bacterium that forms a symbiotic relationship with the root nodules of leguminous plants.
- **Match**: (C) Rhizobium → (iv) Nitrogen Fixing Bacterium.

4. **Identify Nostoc (D)**:
- Nostoc is a genus of cyanobacteria that also has the ability to fix nitrogen.
- **Match**: (D) Nostoc → (i) Nitrogen Fixing Cyanobacterium.

### Summary of Matches:
- (A) Ganga Action Plan → (ii) Ministry of Environment and Forests
- (B) Bt Cotton → (iii) Insect Resistant Plant
- (C) Rhizobium → (iv) Nitrogen Fixing Bacterium
- (D) Nostoc → (i) Nitrogen Fixing Cyanobacterium

### Final Answer:
The correct matches are:
- A → ii
- B → iii
- C → iv
- D → i

Thus, the correct option is **A**.