Question

along some plate boundaries, continual eruptions occur and cooling lava hardens into new sea - floor rock. as more sea - floor rock forms, older rock is pushed away. this is known as sea - floor spreading. where does sea - floor spreading occur? choose 1 answer: a at the convergent boundaries of mid - ocean ridges b at the divergent plate boundaries of island arcs c at the divergent boundaries of mid - ocean ridges d at the convergent plate boundaries of island arcs

Explanation:

Sea - floor spreading occurs at mid - ocean ridges where tectonic plates are moving apart (divergent boundaries). Island arcs are associated with convergent plate boundaries and subduction zones, not sea - floor spreading.

Answer:

C. at the divergent boundaries of mid - ocean ridges