Which option should be selected from the Revolve Type drop-down list to revolve the sketch symmetrically?

In the context of creating a revolved feature in SolidWorks, selecting the appropriate option from the Revolve Type drop-down list is crucial for achieving the desired geometry. The Mid Plane option is the correct choice for revolving a sketch symmetrically because it allows the sketch to be revolved around a reference plane that is positioned exactly at the midpoint of the sketch.

When a sketch is revolved using the Mid Plane option, the geometry is generated equally on both sides of the reference plane, resulting in a symmetrical solid. This is particularly useful when designing components that require bilateral symmetry, such as parts of mechanical assemblies, where balance and uniformity are often essential.

The Forward Plane and Backward Plane options revolve the sketch around planes that are either in front of or behind the sketch's origin, respectively, leading to asymmetric results. Full Rotation refers to the angle of revolution and does not specifically address the symmetry of the sketch about the reference plane. Thus, using the Mid Plane for symmetric revolutions is the most effective and accurate approach.