The ocean crust: a) is the same age worldwide. b) becomes progressively younger away from the mid-ocean ridges. c) ranges in age, the oldest ocean crust is in the atlantic and the youngest is in the arctic. d) becomes progressively older away from the mid-ocean ridge.

c)ranges in age, the oldest ocean crust is in the Atlantic and the youngest is in the Arctic

Explanation:

Oceanic crust slowly moves away from mid-ocean ridges and sites of seafloor spreading. As it moves, it becomes cooler, more dense, and more thick. Eventually, older oceanic crust encounters a tectonic boundary with continental crust