Here's a problem to solve: What do earthquakes tell scientists about the history of the planet?

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

- A: Earth’s climate is constantly changing.
 
- B: The continents of Earth are continually moving.
 
- C: Dinosaurs became extinct about 65 million years ago.
 
- D: The oceans are much deeper today than millions years ago.
 