volcanic eruptions tectonic movements asteroid impacts solar flares
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Images from the Voyager and the Galileo spacecraft provide evidence Europa has a liquid ocean under a surface of ice that results in part from distinctive, surface-cracking patterns produced by which events?
Possibilities:
- volcanic eruptions
- tectonic movements
- asteroid impacts
- solar flares

asteroid impacts