The correct answer is D. Waves
Step-by-step explanation:
Earthquakes mainly occur as energy releases from the Earth Crust (lithosphere) due to movements in the tectonic plates or failures in them. This creates sudden energy that is released as seismic waves that cross different layers on the Earth and therefore are the ones that cause movements in the soil. Due to this, by analyzing the seismic waves it is possible to determine the intensity fo the earthquake based on the energy released by the waves. According to this, the agent that carries energy released from earthquakes is waves.