Here's a problem to solve: 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?

Among the 4 following options, which is the correct answer?

- A: volcanic eruptions
 
- B: tectonic movements
 
- C: asteroid impacts
 
- D: solar flares
 