HELPPP ASAP

The coastal-route theory suggests that people may have first arrived in the Americas by crossing _____.


A.) the open Pacific on a raft and reaching the coast of South America.


B.) the land bridge but spreading south along the Pacific coast instead of moving inland.


C.) from Greenland or Iceland in large ships and traveling south along the Atlantic coast.


D.) the arctic waters by boat and traveling south along the Pacific coast.