excavation methods

Correct answer: A. An estimate of the distribution of structures and empty zones

Explanation: The governing concept is systematic spatial sampling. When trenches are placed at regular intervals, both positive results and empty trenches provide evidence about where structures are concentrated, dispersed, or absent. The pattern can support an estimate of structural distribution and unbuilt zones across the site, although it cannot reveal every feature. Option A is correct. Such trenches cannot by themselves calculate exact population, date every building, or identify a ruler.

Correct answer: B. Record a possible context boundary using all observed properties

Explanation: The governing concept is stratigraphic context: archaeological layers are identified from a combination of colour, texture, composition, inclusions, compaction, and find distribution. Colour alone may be affected by moisture, lighting, or soil processes, so a change in texture and artefact density can still mark a meaningful boundary. Option B is correct; it preserves uncertainty while recording the evidence. Treating everything as one layer loses information, and the other choices are destructive or methodologically invalid.

Correct answer: B. Check boundaries, records and physical continuity and establish their relationship

Explanation: The governing concept is controlled context recording and transparent data reconciliation. Investigators should compare plans, section drawings, photographs, descriptions, coordinates, sample labels, and the physical continuity of the deposit. If the records show one layer, the duplicate numbers can be formally linked or corrected according to the project protocol, while preserving an audit trail. Option B is correct. Arbitrary deletion or mixing soil destroys provenance, and automatically keeping both numbers misrepresents one context as two.

Correct answer: A. Compare both with original measurements, photographs and field notes and create a verified final plan

Explanation: The governing principle is verification against primary field records. When plans conflict, researchers should compare both drawings with measured dimensions, photographs, coordinates, context sheets, and contemporaneous field notes. The discrepancy should be resolved transparently and, where necessary, the revision history should be retained. Thus option A is correct. Choosing randomly, hiding evidence, or deleting the context sacrifices reproducibility and may remove important archaeological information.

Correct answer: D. Confirm with geophysical survey and test excavation

Explanation: The governing concept is methodological triangulation. Modern ploughing can move pottery away from its original location, so the visible scatter may be larger than the actual built-up settlement. Geophysical survey can detect buried features, while test excavation can check deposits and chronology. Option D combines these methods; accepting the entire scatter or discarding all surface evidence would both be unsound.

Correct answer: A. Whether the layers were disturbed later

Explanation: Stratigraphy normally suggests that lower layers are earlier than upper layers, so a later pottery style in a lower layer may indicate an intrusive or mixed context. Historians should check pits, burrows, roots, erosion, construction, or later digging that could have moved the sherd downward. Option A is correct because it tests the reliability of the layer before drawing a chronological conclusion.

Correct answer: A. The sequence of digging, filling, and later alteration of the grave

Explanation: The governing concept is stratigraphy, especially the reading of micro-stratigraphy in a burial. Soil layers above and below a body can preserve the sequence in which the grave was cut, the body was placed, the pit was filled, and later disturbance or alteration occurred. They cannot normally reveal the deceased person's name, a market value, or a language.

Correct answer: A. Metal cutting, grinding, or casting activity

Explanation: The governing concept is craft production identified through production debris. Microscopic metal particles can be created when metal is cut, filed, ground, hammered, or cast, and their concentration in workshop soil supports the interpretation that metalworking occurred there. The particles do not specifically demonstrate cooking, weaving, or water storage. Their value comes from their material and spatial context.

Correct answer: A. Artefacts may move upward or downward and mix the context

Explanation: The governing concept is site formation and bioturbation. Rodents can create tunnels that move small artefacts, bones or sediment upward and downward across an otherwise meaningful stratigraphic boundary. As a result, an object found in a layer may not have been deposited there originally, so dating based only on its position becomes less secure. Burrows do not automatically destroy every object or provide an exact date.

Correct answer: B. Raw stone, unfinished pieces, and waste in a local workshop

Explanation: To identify manufacture at a site, archaeologists look for the production sequence rather than merely for a completed product. Raw imported stone, partly worked pieces, chips, broken blanks, and other workshop waste demonstrate that shaping occurred locally, even if the material originated elsewhere. Option B is strongest. A finished object, its burial context, or its attractive form cannot by itself distinguish local manufacture from import.

Correct answer: A. Planned location choice to reduce smoke and pollution

Explanation: The governing concept is the relationship between craft production and urban environmental planning. Activities producing smoke, heat, fumes or refuse could be placed at a peripheral site and, when possible, downwind or away from densely occupied areas. The spatial concentration of craft waste therefore supports the cautious inference in A. B, C and D either contradict the evidence or ignore the significance of location and wind.