The correct answer is D. Agroforestry.
Agroforestry is a land-use management system in which trees or shrubs are grown in association with crops or livestock. It can be used to improve soil fertility, control erosion, provide shade and windbreaks, and increase crop yields.
Social forestry is a type of forestry that is designed to meet the needs of local communities. It often involves planting trees on degraded land or in areas that are at risk of deforestation.
Jhum is a traditional form of shifting cultivation that is practiced in some parts of Southeast Asia. It involves clearing a small area of forest, planting crops, and then abandoning the area after a few years when the soil becomes depleted.
Taungya is a system of forestry that is practiced in some parts of Southeast Asia. It involves planting trees on land that is already being used for agriculture. The trees provide shade and windbreaks for the crops, and the farmers are allowed to harvest the trees after a few years.
In conclusion, the correct answer is D. Agroforestry. Agroforestry is a land-use management system in which trees or shrubs are grown in association with crops or livestock. It can be used to improve soil fertility, control erosion, provide shade and windbreaks, and increase crop yields.