the image shows a fossil. what information does this fossil give about the mountains where it was found…

the image shows a fossil. what information does this fossil give about the mountains where it was found? these mountains were once in a desert a very long time ago. these mountains were once under a thick layer of ice a very long time ago. these mountains were most likely under the ocean a very long time ago. these mountains were once a tropical rainforest a very long time ago.
Answer
Brief Explanation:
Fossils of sea - creatures like starfish indicate that the area was once underwater. A starfish fossil found in mountains suggests that the mountains were once under the ocean.
Answer:
These mountains were most likely under the ocean a very long time ago.