The correct options are:
Domains all line up
Domains are randomized
Electron movement
When a material is magnetized, its domains become aligned in the same direction, which creates a magnetic field. If the domains are randomized, there is no net magnetic field. The alignment of domains can be affected by external magnetic fields, heating, or other factors. Electrons play a crucial role in magnetism because their movement generates magnetic fields. Proton movement does not contribute significantly to magnetism.