Name and describe the feature of the ocean floor shown at a

the picture will come up if u type in sea-floor spreading understanding main ideas

thx s much

A is volcanoes. They are formed by molten rock emerging through cracks or weaker areas in the crust of the Earth, the molten rock then cools into solid rock. This happens several times and the volcano gradually builds up in many layers, sometimes (like in the photo) this is enough for the volcano to break through the surface of the water e.g. Hawaiian Islands.

Gives full presentation to observe