Answer:
C . cannot travel through space.
Step-by-step explanation:
Electromagnetic waves are composed of moving electric and magnetic field at right angle moving in the direction of propagation of wave. These waves have a transverse nature and travel with a constant velocity in vacuum.
Hence of the notes that Theo made in the list, option 3 which says cannot travel through space is incorrect.
Electromagnetic waves do travel in vacuum as they do not need any medium to travel. They can travel through air, solid materials and through vacuum as well.