which is the first step in the seafloor spreading process?\na crack forms in oceanic crust.\nvolcanoes erupt…

which is the first step in the seafloor spreading process?\na crack forms in oceanic crust.\nvolcanoes erupt under the ocean.\nmolten rock rises up through the crust.\ndense plates are subducted under less dense plates.

which is the first step in the seafloor spreading process?\na crack forms in oceanic crust.\nvolcanoes erupt under the ocean.\nmolten rock rises up through the crust.\ndense plates are subducted under less dense plates.

Answer

Answer:

A. A crack forms in oceanic crust.

Brief Explanation:

In seafloor - spreading, first, a crack forms in the oceanic crust due to tectonic forces. Then magma rises through the crack, solidifies, and creates new oceanic crust as the plates move apart. The other options are later steps in the process.