Concept: A claw hammer has a forked claw designed for pulling nails out of wood.Explanation:The claw hammer has a flat striking face and a split claw at the back.The claw is placed under the nail head and levered backward to remove the nail from wood.Other hammers like ball pein, bossing, or cross pein are used for metalwork or shaping, not nail removal.Answer: D. claw hammer.