Question

in the middle of the atlantic ocean, molten rock continually pours out of volcanoes along a tectonic plate boundary where plates are pulling apart. the molten rock cools and hardens as it slides down either side of the plate boundarys mid - ocean ridge. which of the following best describes this process? choose 1 answer: a mountain building at a convergent boundary b sea - floor spreading at a convergent boundary c mountain building at a divergent boundary d sea - floor spreading at a divergent boundary

Explanation:

The text describes molten rock emerging from a tectonic - plate boundary where plates are pulling apart (divergent boundary) and forming new oceanic crust as it cools. This is the process of sea - floor spreading. Mountain building occurs at convergent boundaries where plates collide, not at divergent boundaries. Also, sea - floor spreading does not occur at convergent boundaries.

Answer:

D. sea - floor spreading at a divergent boundary