Pickup the correct statement from the following :

Options

A. Growth of crops and damage to agriculture is due to water logging and soil salinity
B. Montereal protocol became effective in 1989
C. Kyoto protocol became effective in 2005
D. All the three

Answer

To solve the question of picking the correct statement from the given options, we will analyze each statement step by step.

### Step-by-Step Solution:

1. **Analyze the First Statement:**
- The first statement mentions that the growth of crops and damage to agriculture is due to water logging and soil salinity.
- **Explanation:** Water logging occurs when excess water saturates the soil, preventing proper drainage. This can lead to increased soil salinity because the waterlogged conditions prevent leaching, which is the process of removing soluble substances from the soil. High salinity can hinder crop growth and damage agricultural productivity.
- **Conclusion:** This statement is correct.

2. **Analyze the Second Statement:**
- The second statement states that the Montreal Protocol became effective in 1989.
- **Explanation:** The Montreal Protocol is an international treaty designed to phase out substances that deplete the ozone layer. It was indeed adopted in 1987 and became effective in 1989.
- **Conclusion:** This statement is also correct.

3. **Analyze the Third Statement:**
- The third statement claims that the Kyoto Protocol became effective in 2005.
- **Explanation:** The Kyoto Protocol is an international agreement that commits its parties to reduce greenhouse gas emissions. It was adopted in 1997 and entered into force in 2005.
- **Conclusion:** This statement is correct as well.

4. **Final Evaluation:**
- Now, we have evaluated all three statements:
- Statement 1: Correct
- Statement 2: Correct
- Statement 3: Correct
- Since all three statements are correct, the answer is option 4, which states that all three statements are correct.

### Final Answer:
The correct answer is option 4: All three statements are correct.

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