Question

Systematic surface survey tends to be preferred to unsystematic for a number of reasons, primarily because in unsystematic surveys there is a tendency for
a) survey walkers to concentrate mostly on areas where artifacts seem richer
b) survey walkers to get tired and hide under bushes
c) survey walkers to walk in circles
d) survey walkers to veer off the survey grid

Answer

This answer is hidden. It contains 1 characters.