Question

Which of the following horizons is the soil's parent material?

Select one:
a. A horizon
b. B horizon
c. O horizon
d. D horizon

Answer 1

horizon c on edge

Step-by-step explanation:

Answer 2

The answer is D-Horizon.
D-horizon is part of the soil that filled with unmodified mineral matters that would be suitable for parent's material.
This happen because it's located deep enough to the point where it no longer affected by outside's weathering process.