The use of fertilisers in farming is an example of

Options

A. no-cost production
B. low-cost production
C. high-cost production
D. none of these

Explanation

### Step-by-Step Solution:

1. **Understanding Fertilizers**: Fertilizers are artificial substances that provide essential nutrients to plants, which are not readily available in the soil. They are used to enhance crop production.

2. **Nutrient Composition**: Fertilizers typically contain key nutrients such as nitrogen (N), phosphorus (P), and potassium (K). These nutrients are crucial for plant growth and development.

3. **Purpose of Fertilizers**: The primary purpose of using fertilizers is to improve the yield and health of crops. By supplying the necessary nutrients, fertilizers help plants grow better and produce more food.

4. **Scale of Use**: Fertilizers are used extensively in modern agriculture to support large-scale farming operations. This widespread use is due to the demand for higher crop yields to feed a growing population.

5. **Cost Implications**: The production and application of fertilizers can be expensive. This high cost is associated with their production, transportation, and the need for large quantities to be effective.

6. **Conclusion**: Therefore, the use of fertilizers in farming is an example of high-cost production due to the expenses involved in their use and the need for large-scale application to achieve desired agricultural outcomes.

### Final Answer:
The use of fertilizers in farming is an example of **high-cost production**.

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