Humus is present in the topmost layer of soil.
The correct option is B True
The three main layers of soil are A- horizon (topsoil), B-horizon (subsoil), and C- horizon.
The Uppermost layer of the A-horizon of the soil profile is the most suitable for the growth of plants because:
It has a high content of humus which provides nutrients to grow plants.
It is soft porous and has more water-retaining capacity.