Explanation:

Terrace cultivation, method of growing crops on sides of hills or mountains by planting on graduated terraces built into the slope. The method has been employed effectively to maximize arable land area in variable terrains and to reduce soil erosion and water loss.

 Deforestation leads to loss of trees, which anchor the soil with their roots, causes widespread erosion throughout the deforested area.

Tropical climate has no direct relation with soil erosion. Therefore this option is incorrect.