Electromagnetic waves are transverse waves. Electromagnetic waves have very low velocity. Electromagnetic waves are all visible to human eyes. Electromagnetic waves can travel through a vacuum.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: What property of electromagnetic waves makes it possible to use these waves to transmit information between a space shuttle and NASA mission control centers on the ground?
Possibilities:
- Electromagnetic waves are transverse waves.
- Electromagnetic waves have very low velocity.
- Electromagnetic waves are all visible to human eyes.
- Electromagnetic waves can travel through a vacuum.

Electromagnetic waves can travel through a vacuum.