a long, seismically active submarine ridge system situated in the middle of an ocean basin and marking the site of the upwelling of magma associated with seafloor spreading. An example is the Mid-Atlantic Ridge.
<h2>THIS IS THE GOOGLE DEFINITION*</h2>
<span>The trait of extraversion often correlates around 50% for identical twins and around 50% for fraternal twins. It correlates around the same, </span>but will differ only among sexes, whether male or female.
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Rock begins to melt when temperatures increase. Lava or magma is essentially molten rock deep from the earth (as an example).
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the answer is A. because it is right