Answer: curator
Explanation: curators are in charge of a museum or art gallery. I hope this helps :)
The electromagnetic wave is self propagating, what I mean by that is, an electric field generates a magnetic field at 90 degree phase angle, and the magnetic wave you get as a result generates the electric wave at the same phase angle. The interchange of electric to magnetic and vice versa continues and lets the electromagnetic waves to travel without any medium. Quite interesting, really!
I believe the answer could be found in a file but 72737 sound correct hahaha
