A 10-digit grid reference provides precise geographic locations, with each digit refining the coordinates. It offers accuracy to the nearest meter, making options B, C, and D (kilometer, mile, yard) incorrect as they represent larger units of measurement.
A 10-digit grid reference provides a precise location, with each digit representing a subdivision of the previous one. Typically used in military, mapping, or geographic information systems (GIS), the precision of a 10-digit grid reference is to the nearest meter.
Each digit narrows down the location, with the first two indicating a one-degree grid square, the next two narrowing to a 10-minute square, and so on. Therefore, the final two digits pinpoint a specific location within a square, providing accuracy to the meter level.
Options B, C, and D are incorrect because a 10-digit grid reference goes beyond kilometers, miles, or yards in precision, offering a more detailed and accurate measurement at the meter level.