this area was once below sea level. global temperature changed over time. erosion took place after a flood. volcanic activity affected the area.
I gave my students this multiple choice question: A student is visiting a local limestone quarry and finds fossils of seashells. The quarry is located hundreds of miles from the ocean. The fossils best indicate that

Only one answer is correct among these 4 choices:
- this area was once below sea level.
- global temperature changed over time.
- erosion took place after a flood.
- volcanic activity affected the area.

Could you tell me which one is correct?

this area was once below sea level.