3. Where are the newest parts of Earth's crust located? A. at mid-ocean ridges
B. at the edges of continents
C. at the tops of mountains
D. in the cratons of continenets

A

Explanation:

Mid-ocean ridges are where new crust is formed as the two plates pull away from each other. Therefore, the newest crust is at the mid-ocean ridges.

At mid ocean ranges.

Explanation:

At mid ocean ranges are where crust is pushed up from underneath. Thus the newest crust has been pushed up there. A midocean ridge is also a fault line.

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