The correct answer is: A. Lies below the water table at every point.
The capillary zone is the region above the water table where water is held in the soil by capillary action. Capillary action is the ability of a liquid to flow in narrow spaces without the assistance of, and in opposition to external forces like gravity. The water table is the upper surface of the zone of saturation, where all pores in the soil are filled with water.
The capillary zone is always below the water table because the water in the capillary zone is held in place by capillary action, which is a weaker force than gravity. The water in the water table is held in place by gravity, which is a much stronger force.
Option B is incorrect because the water in the capillary zone is always below the water table. Option C is incorrect because the water table is always below the capillary zone. Option D is incorrect because the capillary zone is always below the water table.