Question 288General Subjects - Assistant Engineer

The correct answer is A) dimension line. A dimension line is used to indicate the size or measurement of an object or feature in a technical illustration. Line "C" in the provided illustration GS-0006 is a dimension line, as it is used to show the measurement or size of the depicted object. The other answer choices are incorrect because: B) Leader line - A leader line is used to point to and identify a specific feature or part of an illustration. C) Cutting plane line - A cutting plane line indicates the plane along which a cross-sectional view of the object is taken. D) Phantom line - A phantom line is used to show the outline of a hidden or obscured feature within the object.