Final answer:
The Rotate tool is the transformation tool from the given options in Adobe Illustrator; it changes the orientation of objects.
Step-by-step explanation:
The transformation tool in Adobe Illustrator that is mentioned in the options is the Rotate tool. This tool is used for rotating objects around a fixed point. The Zoom and Hand tools are navigation tools that help you move around the canvas and change the level of magnification. The Crop tool is used to crop images, which could be considered a transformation, but it is more specific to resizing and trimming the canvas or image areas. The Rotate tool, however, is clearly a transformation tool because it changes the orientation of the objects within the Illustrator workspace.