When the earth's continental crust and ocean crust formed, they were different densities. why did they differ in density and how did this affect their formation? a.) the continental crust was thicker and less dense. it rose above sea level, separating land from water. b.) the continental crust was thicker and more dense. it sunk below sea level, separating land from water. c.) the continental crust was thinner and less dense. it rose above sea level, separating land from water. d.) the continental crust was thinner and more dense. it sunk below sea level, separating land from water. i think it’s b, but i’m not completely sure. !