Question

from which location does seafloor spreading originate?
○ mid-ocean ridges
○ edges of continents
○ deep-ocean trenches
○ underwater volcanoes

Explanation:

Seafloor spreading is a tectonic process where new oceanic crust forms as magma rises, cools, and pushes existing crust outward. This process initiates at underwater mountain ranges where magma upwells from the mantle.

Answer:

mid-ocean ridges