What is a key difference between a Design Group and Feature Group?

A Design Group is primarily used to manage and control the updating of the model as it allows for better organization and manipulation of features within the model. It provides a way to group together multiple features, thus making it easier to edit or update a set of features simultaneously. This capability is particularly beneficial when dealing with complex models where certain characteristics must be maintained while changes are made to others.

On the other hand, the other options do not accurately reflect the functionalities of Design Groups and Feature Groups. Design Groups are not limited to aesthetic features, nor are Feature Groups restricted to just sketches. Additionally, Feature Groups can include a wider variety of features beyond just solid bodies; they can also encompass operations like holes and rounds. Therefore, the ability of a Design Group to control the updating process is a significant distinction that enhances workflow efficiency in design modification processes.