The border between two plates that are colliding is known as a convergent boundary.
The boundary between two plates that are pushing apart is known as a diverging boundary.
Thus, Option B is correct.
When two tectonic plates diverge, a diverging border is created. As magma (molten rock) rises from the Earth's mantle to the surface and solidifies to form a new oceanic crust, earthquakes frequently occur along these borders. Divergent plate boundaries can be seen, for instance, in the Mid-Atlantic Ridge.
An area where two plates converge is referred to as a convergent border. One or both colliding plates' boundaries may bow upward into mountain ranges or downward into a shallow undersea trench as a result of the collision.
Along convergent plate borders, a chain of volcanoes frequently arises and strong earthquakes frequently occur. As an illustration of a convergent plate boundary, consider the Pacific Ring of Fire.
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