Concept:Transferring pattern markings onto fabric requires a temporary method that clearly copies the marks from the paper pattern to the fabric.Explanation:Tailor’s tacks are loose thread loops used to transfer markings such as darts, buttonholes, or seam positions from the paper pattern onto both layers of fabric.They are easily removed after sewing and leave visible marks on the fabric.Basting and tacking are used for holding fabrics together, not for transferring pattern markings.Answer:A. Tailor's tacks.