Correct Answer !
The zoning of a project area into partitioned areas receiving differential densities of subsurface testing. This is an important part of archaeological research designs given limited time and budgetary resources. Some areas, for instance, can be confidently excluded from surveys based on a statistical improbability of existing cultural resources, including most wetlands and areas exhibiting very steep slopes or extremely rocky conditions. Exceptions occur, however, prompting the necessity for other evaluation methods such as pedestrian surface surveys and informant interviews. For a detailed example, see "Targeting Specific Landforms and Ecological Settings: Troutbrook Valley".