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Final answer:A lag shield anchor is an expansion anchor and a type of mechanical fastener used to secure objects to materials like concrete or brick by expanding against them as a lag screw is tightened.Explanation:A lag shield anchor is best described as a type of expansion anchor. It is a mechanical fastener used in concrete, stone, brick, and block. The lag shield anchor functions by expanding against the material in which it is installed when a lag screw or bolt is tightened into it. This expansion creates a snug fit, which holds the anchor securely in place. They are not considered chemical or adhesive anchors since their mechanism relies purely on mechanical force....