Concept:Waterlogging means the soil is saturated with excess water.Explanation:When water fills the spaces around soil particles and colloids, the soil becomes waterlogged.This condition is known as waterlogging.Drainage removes excess water from the soil.Irrigation is the controlled addition of water to soil.Leaching is the washing down of nutrients by water moving through the soil.Therefore, the correct term for excess water in soil colloids is waterlogging.Answer:B. waterlogging