Question 291General Subjects - Assistant Engineer

The correct answer is A) hidden line. In technical drawings, a hidden line is used to represent an edge or surface that is not visible from the given view. It is typically represented by a dashed line, as shown by line "D" in the illustration GS-0006. This convention helps convey the three-dimensional nature of the object being depicted. The other options are incorrect because: B) A sectioning line is used to indicate the plane of a cross-section, C) An outline is the visible edge of an object, and D) A phantom line is used to indicate a temporary or removable feature.