Which one of these commands does not use Target Body and Tool Body selections?

The command that does not use Target Body and Tool Body selections is the Combine function. This command operates differently than the others, which specifically involve two distinct bodies: the Target Body and the Tool Body.

The Combine command is used primarily for joining or modifying a single body rather than interacting with two separate entities. It models how materials are added or manipulated within a single object, allowing the user to create complex forms or modify existing ones without the need to select a separate tool for cutting or joining.

In contrast, the Intersect, Unite, and Subtract commands are Boolean operations that require clear distinctions between the Target and Tool Bodies to execute their functions properly. These commands manipulate two separate bodies to achieve results like intersection, union, or subtraction of material, making the need for specific selections necessary.