Which horizon typically often occurs below the spodic horizon?

The correct answer is that the albic horizon typically occurs below the spodic horizon. The spodic horizon is characterized by the accumulation of leached organic matter, aluminum, and iron, which results primarily from the processes of podzolization often found in acidic, sandy soils.

The albic horizon, which is a lighter-colored layer, is a horizon that has been leached of clay, iron, or other constituents. It generally occurs beneath the A horizon and above the illuvial horizons such as spodic in some soil profiles. This makes it a logical occurrence beneath the spodic horizon due to the sequence of soil formation processes—where leaching occurs above and more accumulation of materials below.

In contrast, the O horizon is organic in nature and consists mainly of decomposed plant materials, typically found on the surface. The C horizon is composed of weathered rock or partially disintegrated rock and represents the parent material from which soil is formed. The E horizon is a layer that has undergone significant leaching of minerals and organic matter, but in the context of its typical position, it's often between the A and B horizons.

Given these positions and characteristics of the horizons, it is clear that the albic horizon is the one that can be primarily