Which Synchronous Modeling command offsets a set of faces from their current location?

The command that offsets a set of faces from their current location is indeed the Offset Region command. This command is specifically designed to create a new set of faces at a specified distance from the original geometry, effectively maintaining the topology while allowing modifications to the shape or dimensions of the model. This is especially useful when you want to create a uniform offset or a specific thickness around a complex shape.

Offset Region works well for planar and non-planar faces and is particularly beneficial in situations where a designer needs to create a shell or modify the contours of a part while keeping the original design intent intact. It allows for various modifications without the need to recreate the geometry, thereby enhancing efficiency in the design process.

Other commands such as Offset Surface and Offset Feature exist but have different applications and functionalities. Offset Surface focuses on creating a new surface offset from an existing one, primarily applicable in surface modeling rather than solid modeling. Offset Feature refers to creating an offset of a specific feature within a model rather than a comprehensive set of faces. Variable Offset might imply changing the distance of the offset dynamically, but it does not directly pertain to the function of offsetting an entire set of faces from their current location. Thus, the correct command for the specific action described in the question is