Final answer:
The Potts-Smith forceps are used to remove plaque during a carotid endarterectomy. This instrument allows for the delicate removal of plaque to restore blood flow.
Step-by-step explanation:
The instrument used to remove plaque during a carotid endarterectomy is identified as option D: Potts-Smith. A carotid endarterectomy is a surgical procedure designed to remove plaque buildup from the carotid arteries and restore normal blood flow to the brain. The Potts-Smith forceps are specifically designed for delicate vascular surgery such as this, enabling surgeons to carefully separate and remove the plaque from the arterial wall.