Answer:
b. Human: Mining and industry.
Step-by-step explanation:
Human activities such as mining, deforestation, over grazing and industrial activities etc are responsible for the land degradation in India. Due to mining, the land is disturbed and degraded when the minerals are extracted from the land. Cutting of trees leads to barren land and the wind and rainfall with high intensity removes the upper layer of the soil with the passage of time. Overgrazing of animals on the land removes all vegetation and the land is susceptible for erosion and degradation.