Which option in the extrude dialog projects an extrude to the side walls of a pocket?

The concept of projecting an extrude to the side walls of a pocket is best represented by using the option that allows for an open profile smart volume. This option is particularly designed for cases where the profile being extruded does not completely enclose a volume, allowing it to extend outwards towards the boundaries of existing geometry, such as the side walls of a pocket.

When using the open profile smart volume, the extrude is directed in a way that it recognizes the existing geometry and fills the space while conforming to those boundaries. This capability is particularly useful when the goal is to create features that need to connect or interact with existing parts of the design, such as the side walls of a pocket, without the need for closed profiles that would otherwise define a solid volume in a conventional manner.

Other options, while useful in different contexts, do not specifically address the requirement of projecting to the side walls of a pocket. For example, closed profile smart volume typically requires a fully enclosed profile and is not suited for this scenario, while the extrude to edge and extended extrusion options may not provide the necessary flexibility for projecting into existing geometry in the same manner that the open profile smart volume option does. Thus, using the open profile smart volume option aligns perfectly with