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Q: ____ are built up by the liquid and solid rock erupting from the earth's interior.
  • A. Fault-block mountains
  • B. Plateaus
  • C. Erosional mountains
  • D. Volcanoes
Correct Answer: Option D - A volcano is most commonly a conical hill our mountain built around a vent that connects with reservoirs of molten rock below the surface of the earth. Molten rock below the surface of the earth that rises in volcanic vents is known as magma, but after it erupts from a volcano it is called lava.
D. A volcano is most commonly a conical hill our mountain built around a vent that connects with reservoirs of molten rock below the surface of the earth. Molten rock below the surface of the earth that rises in volcanic vents is known as magma, but after it erupts from a volcano it is called lava.

Explanations:

A volcano is most commonly a conical hill our mountain built around a vent that connects with reservoirs of molten rock below the surface of the earth. Molten rock below the surface of the earth that rises in volcanic vents is known as magma, but after it erupts from a volcano it is called lava.