Concept:A permanent hand stitch used to join finished edges on the outside/right side of an article, worked from right to left.Explanation:• Overcasting is used to finish raw edges, not to join right-side surfaces.• Hemming stitch and slip stitch are used for hems, usually on the wrong side.• Oversewing joins two finished edges neatly on the right side of the article and is worked from right to left.Answer:B. oversewing