Which of the following was Matthew Maury's greatest accomplishment? A. Maury sailed around the world in the fastest time.
B. Maury discovered the smallest member of the ocean’s food chain.
C. Maury learned how to create maps.
D. Maury mapped the bottom of the Atlantic Ocean.

the earth is thought to have been formed about 4.6 billion years ago by collisions from a cloud of hydrogen, helium, rock, ice and other materials. these were pulled together by gravity to form objects in and around earth like- asteroids and small early planets called planetesimals.

so, the best possible answer to this question will be option d- to harden materials to form different parts of earth’s layers