If an Archaeologist Is Excavating in Arbitrary Levels

Multiple Choice

If an archaeologist is excavating in arbitrary levels:

A) he or she is following the natural breaks in the sediments (following the stratigraphy) .
B) natural strata are probably lacking or difficult to recognize.
C) the natural strata may be more than 10 centimeters thick.
D) the natural strata are probably lacking or difficult to recognize, and may be more than 10 centimeters thick.