Greenland is the largest island on the planet, formed 3.8 billion years ago, and most of it was covered by snow and ice. There are a lot of ancient rock fossils buried underground in Greenland. They are arranged like a neat dike, also known as Serpentine. With these serpentine, one can conclude that Greenland was an undersea continent in ancient times. Which of the following can be used as a prerequisite to reaching the above conclusion? ['The age and characteristics of these serpentine fossils are consistent with those found in Isua, which was once an undersea continent.', 'Serpentine is a rock formed when two continental plates collide with each other in motion and squeeze the continent.', 'The shape of carbon in serpentine presents a tubular and onion-like structure unique to biological tissues, similar to early marine microorganisms.', 'Many new continents were created by the movement of the continental plate. Before the plate movement took place, most of the earth was a vast ocean.']