Question 630General Subjects - Assistant Engineer

The correct answer is D) knurling tool. A knurling tool is a lathe attachment used to create a textured surface on a workpiece, often to improve grip or provide a decorative pattern. This type of tool is commonly used in machinery and metalworking applications, including on items like firearm components, knobs, and handles. The illustration GS-0090 likely depicts a knurling tool, making D the correct choice. The other answer options do not accurately describe the tool shown in the illustration. "Furling," "curling," and "hurling" are not standard terms used to refer to this type of lathe tool.