Which of the following best describes the process of isolated block excavation
it refers to an archaeological evacuation that process in 1-x1 meter sections one at a time
it refers to an archaeological process that uses water to clear dirt away
it refers to any kind of archaeological excavation that uses tools
it refers to an archaeologist working alone

An isolated block excavation refers to an archaeological evacuation that process in 1-x1 meter sections one at a time. This is probably the closest statement for your question if the excavation site only involves a small portion but usually this strategy is used for wide excavations where trenches are dug and separated into thick blocks or columns of soil. 

Iwould have to say c. the german americans.