Correct option is D
The
Centre line is used to denote the axis of a cylinder or sphere in technical drawings. It represents the central axis around which the shape is symmetrical.
Leader line: Used to point to a specific detail or note in a drawing.
Section line: Indicates the location of a section cut in a sectional view.
Hidden line: Represents edges or outlines not visible in the current view.
Therefore, the correct answer is (d) Centre line.
