Make Single User
Makes the selected or all object data-blocks single users, that is, not shared (linked) between other objects in the blend-file.
Additionally, it can also make single-user copies of its dependencies, like meshes, curves, materials, animations…
These actions work on the selected objects, or on all the objects of the scene.
All, Selected Objects
Lets you, in addition to the menu predefined selection, choose the type of data-blocks individually.
Object, Object Data, Materials, Textures, Object Animation