Explanation:

In this question, the correct answer is option 'D' which is Mixed Farming. Mixed farming is a type of farming where the land is used for growing food and fodder crops as well as rearing livestock. Let's understand the concept of mixed farming in detail.

Mixed Farming:
Mixed farming is a type of farming system where both crop production and animal rearing are practiced on the same piece of land. It involves a combination of crop cultivation and livestock farming. This system is commonly practiced in areas where there is sufficient availability of land and water resources.

Benefits of Mixed Farming:
Mixed farming offers several benefits. Some of the key benefits are as follows:

1. Diversification: Mixed farming allows farmers to diversify their income sources. By combining crop cultivation and animal rearing, farmers can have multiple sources of income from selling crops, milk, meat, eggs, and other animal products.

2. Nutrient Recycling: In mixed farming, the waste products from animals such as manure can be used as organic fertilizers for crops. This helps in maintaining soil fertility and reduces the need for chemical fertilizers.

3. Risk Management: By diversifying their activities, farmers can reduce the risk of crop failure or livestock loss. If there is a poor harvest, they can still rely on income from animal products, and vice versa.

4. Sustainable Agriculture: Mixed farming promotes sustainable agriculture practices. The integration of crops and livestock helps in maintaining the ecological balance and reduces the impact on the environment.

5. Efficient Resource Utilization: Mixed farming allows for the efficient utilization of resources such as land, water, and labor. The by-products of one activity can be used as inputs for the other, minimizing waste and maximizing productivity.

Conclusion:
Mixed farming is a farming system that combines crop cultivation and animal rearing on the same land. It offers several benefits such as diversification of income, nutrient recycling, risk management, sustainable agriculture, and efficient resource utilization. This type of farming is commonly practiced in areas where both crops and livestock can be economically viable.