As the geology officer on an expedition to a newly discovered, Earthlike planet, you must determine whether the planet has a crust composed of
plates that move.
Which is the best indication that the planet may have plate tectonics?
A. Buttes and mesas with iron-rich rock
B. Deep chasms carved by meteor impacts.
C. Water in all three forms (liquid, ice, and vapor)
O D. Chains of volcanoes along continental coastlines