Question

at the end of seafloor spreading, where does the molten rock solidify?

• center of the ridge
• on the edge of the ridge
• under the new rock
• between the old rock layers

Explanation:

Seafloor spreading occurs at mid-ocean ridges: molten rock (magma) rises from the mantle at the ridge's center, then cools and solidifies there to form new oceanic crust, which then moves outward from the ridge over time.

Answer:

A. center of the ridge