Please choose the correct answer to the 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

Answer1: this area was once below sea level. Answer2: global temperature changed over time. Answer3: erosion took place after a flood. Answer4: volcanic activity affected the area.

Answer format: answer1/answer2/answer3/answer4
Answer: answer1