Question 297General Subjects - Assistant Engineer

The correct answer is B. The centerline depicted in a drawing or blueprint is typically represented by a long, thin dashed line, which corresponds to choice B in the illustration GS-0031. This representation is a standard convention used in technical drawings and blueprints to clearly indicate the central axis or line of symmetry of an object or component. The other answer choices, such as a solid line (A), a chain-dotted line (C), or a zig-zag line (D), are not the standard representation for a centerline in technical drawings and would not be the correct answer.