Final answer:
Clay Loam soil has the lowest permeability due to its fine particles and thus small pore spaces, leading to slow water movement through it.
Step-by-step explanation:
The soil with the lowest permeability is likely to be C) Clay Loam. Permeability in soil is largely influenced by the texture of the soil, which relates to the size of the particles that make up the soil. Clay soils are composed of very fine particles and tend to have small pore spaces, which results in lower permeability compared to soils with coarser particles like sand.
The fine particles of clay cause it to be cohesive, and when mixed with water, its plasticity increases, creating a tightly packed soil structure with low permeability. Thus, water moves very slowly through clay soils, which can be disadvantageous for agriculture since plant's roots require both water and air circulation.