The pattern of observation known as the "searcher cube" refers to:
A. actively looking for clues in an area a half-sweep-width long and a half-sweep-width wide.
B. attempting to estimate how many clues could be observed in a hypothetical square in your search segment.
C. making a practice of looking upward, downward, and in a 360 circle around you.
D. putting searchers into a four-cornered formation for a grid search.
Answer: C