Only a(n) fine-grained stone can hone a blade to its sharpest possible edge. Option B
Only a fine-grained stone can hone a blade to its sharpest possible edge. These stones, often known as sharpening or whetstones, have a smooth texture and a fine-grained surface that allows for precise sharpening of blades.
Unlike metal rods or electric sharpeners, which can realign or sharpen blades to some extent, a fine-grained stone is specifically designed to refine the blade's edge to its utmost sharpness by removing small amounts of metal, resulting in a keen and polished edge.