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 boundary's 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 sea-floor spreading at a divergent boundary Dmountain building at a divergent boundary​