Final answer:
The classification that consists of soils with horizons similar in various physical properties is known as a 'soil series'. This classification reflects similarities in the soil profile, including color, texture, and chemical composition across different layers such as the O horizon, A horizon (topsoil), B horizon (subsoil), and C horizon (soil base).
Step-by-step explanation:
The question is regarding the classification of soils based on their physical properties, more specifically their horizons. Horizons are distinct layers of soil that have unique characteristics in terms of color, texture, structure, and chemical composition. The options provided (Orders, Families, Subgroups, Series) are classifications within a soil taxonomy system. When we talk about soils that have horizons similar in multiple physical properties and arrangement in the profile, we are referring to soil series. A soil series consists of soils with horizontally continuous layers that are alike except for variations in texture, especially in the surface layer or substratum.
In a typical soil profile, we have the O horizon which contains organic matter, followed by the A horizon or topsoil, rich in organic material and inorganic products of weathering. Beneath that is the B horizon or subsoil, which typically accumulates fine materials that have moved downward. Finally, the C horizon is the soil base that includes parent material and material that has broken down to form the soil. The question seems to be focused on identifying which level of soil taxonomy the described classification falls under, which is a soil series as per the given definitions.