Which view shows the internal detail of a model?

The section view is specifically designed to illustrate the internal details of a model by cutting through the object and revealing its internal features. This type of view allows for a clear presentation of the components and geometry that are not visible from the exterior view of the model. It is particularly useful for understanding complex assemblies, checking for interference, or analyzing internal structures, such as ducts, conduits, or mechanical layouts.

In contrast, the projected view displays the object from different viewpoints but does not provide the cross-sectional details that the section view reveals. Principal work planes relate to the fundamental reference planes used for sketching and modeling but do not directly show the internal characteristics of a model. The properties option typically refers to metadata or characteristics of the model rather than a visual representation. Thus, the section view is the most appropriate choice for showing internal detail.