In technical drawings, a Leader Line is:

In technical drawings, a Leader Line is:

• A. A decorative line
• B. A line of a drawing scale
• C. The part of a drawing to which a number or note applies; solid line ending in an arrowhead
• D. A boundary line

Answer: (C)

Leader lines are the connectors that tie a note, dimension, or callout to the exact feature it describes. They keep the drawing readable by moving the annotation away from the feature while clearly pointing to it. This line is drawn as a solid stroke that ends in an arrowhead at the feature, which is why the description that identifies it as the part of the drawing to which a number or note applies, with a solid line ending in an arrowhead, is the best fit. Decorative lines, scale lines, and boundary lines serve different purposes in drawings, so they don’t describe how leader lines function.

Leader lines are the connectors that tie a note, dimension, or callout to the exact feature it describes. They keep the drawing readable by moving the annotation away from the feature while clearly pointing to it. This line is drawn as a solid stroke that ends in an arrowhead at the feature, which is why the description that identifies it as the part of the drawing to which a number or note applies, with a solid line ending in an arrowhead, is the best fit. Decorative lines, scale lines, and boundary lines serve different purposes in drawings, so they don’t describe how leader lines function.