Why are farming practices like terraced fields important in terms of soil conversation?

A: They remove pollutants from the soil, which is essential because living things depend on pollutant-free soil.
B: they prevent soil from eroding and becoming lost, which is essential because soil is a nonrenewable resource.
C: They help limit the amount of soil that is produced, which is essential because soil is a renewable resource.
D: They cause nutrients in the soil to leak out, which is essential because plants need nutrient-poor soil.

B: They prevent soil from eroding and becoming lost, which is essential because soil is a nonrenewable resource.