What is defined as a bank of soil with at least two feet of vertical height?

An embankment is defined as a bank of soil with at least two feet of vertical height. This term specifically refers to a raised structure made of earth material, and it is often used in the context of engineering and construction to create barriers or to direct water flow. Embankments can serve various purposes, including preventing flooding, controlling erosion, and providing support for roads or railways.

The other options do not fit the definition provided. A water table refers to the level below which the ground is saturated with water, and it is not related to soil height. A soil barrier typically implies a structure or layer that inhibits water flow or movement of contaminants, but it does not have a specified vertical height characteristic. Terracing involves creating flat areas on a slope to prevent soil erosion and manage water runoff but does not specifically refer to a two-foot vertical bank of soil.