Which of the following forms of energy can travel through empty space and is transmitted through waves?

a) sound
b) chemical
c) thermal
d) electromagnetic

I think it's electromagnetic...?

(Thanks for everything today, everyone!! I'll give the best answers out tomorrow... you all are the best!)

d

Electromagnetic. this is basically light and all of the wavelenths that make it up!

Without a doubt it is electromagnetic. I just taught this to my science class.