What is a full-section drawing characterized by?

A full-section drawing is characterized by its representation of an object as if it has been cut completely through, revealing the internal features and components. This type of drawing provides a clear and detailed view of how different elements fit together and operate within the object, making it especially useful for understanding complex assemblies. The full-section allows designers and craftsmen to visualize the internal structure, which can include different materials used, shapes of parts, and assembly methods.

The other options do not accurately capture the essence of a full-section drawing. For example, simply showing only the exterior would limit the viewer's understanding of the internal workings, while focusing solely on major components misses the detail that a complete section provides. Illustrating the object in a two-dimensional format is indeed a characteristic of full-section drawings, but it is the thoroughness of passing entirely through the object that defines what separates it from other types of drawings, such as partial sections or elevation views.