In assembly drawing views, what does changing balloon distance affect?

Changing the balloon distance in assembly drawing views primarily affects the placement of annotation balloons. Annotation balloons are used to reference components in the assembly, and their distance from the respective parts can impact how clearly the assembly is understood. Adjusting the distance can help to avoid overlaps with other elements in the drawing, ensuring that each balloon clearly indicates its corresponding part without confusion or clutter. This adjustment is crucial for maintaining effective communication of information in technical drawings, especially in complex assemblies.

The other options relate to aspects that are not directly influenced by the balloon distance. For example, the overall dimensions of the model or the material properties displayed remain unaffected by how far the balloons are placed from the components. Similarly, while the visual clarity of the assembly can be influenced indirectly by the placement of balloons, it is specifically the balloon distance that determines where these reference points are situated relative to the parts they annotate.