human
Question: A scientist discovered a fossil of an ocean plant in the rocks of a desert. What does the discovery of this fossil most likely tell the scientist?

Choices:
A) The fossils were formed at the top of a mountain.
B) The fossils were formed during a rainstorm.
C) The area had many volcanic eruptions.
D) The area was once covered by water.
gpt
The correct answer is 3: The area was once covered by water..