Which layer of the soil would not have any plant material growing there?
A. C
B. A
C. O

C.

Explanation:

The C horizon consists mostly of large rocks and no soil that plants/plant material can inhabit

This example illustrates "William Ogburn's concept of cultural lag".
Cultural lag alludes to the phenomenon that happens when changes in material culture happen previously or at a quicker rate than the progressions in non-material culture. As such, cultural lag is when innovative change, or something comparative like devices, grows quicker than culture can process those progressions.