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A
To measure distance
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B
To smooth, shape, or remove small amounts of material from a surface by abrasion
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C
To drive nails
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D
To check voltage
Why this is the answer
A FILE is used to SMOOTH, SHAPE, or remove small amounts of material from a surface by ABRASION (the hardened, ridged surface scrapes away material as it's pushed across). ASVAB Shop Information tests shaping/finishing tools. Files come in various shapes (flat, round, half-round, triangular) and coarseness; used on metal, wood, and plastic to deburr edges, smooth surfaces, sharpen, and shape. A RASP is a coarse file for wood. Files cut on the push stroke. Knowing the file's purpose (smoothing/shaping by abrasion) is commonly tested.
Source: ASVAB Shop Information — Files