Nitrogen, phosphorus and potassium are examples of

Options

A. micronutrients
B. macronutrients
C. fertilisers
D. both (b) and (c).

Explanation

**Step-by-Step Solution:**

1. **Identify the Elements**: The question mentions three elements: Nitrogen, Phosphorus, and Potassium.

2. **Recognize Their Importance**: These elements are essential for plant growth and are crucial for soil fertility.

3. **Classify the Elements**: Nitrogen, Phosphorus, and Potassium are classified as macronutrients because they are required by plants in larger quantities compared to other nutrients.

4. **Understand Their Role**:
- Nitrogen is important for leaf growth and overall plant health.
- Phosphorus aids in root development and flowering.
- Potassium helps in the overall functioning of plant processes, including water regulation and enzyme activation.

5. **Conclusion**: Therefore, Nitrogen, Phosphorus, and Potassium are examples of macronutrients.

**Final Answer**: Nitrogen, phosphorus, and potassium are examples of macronutrients.

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