A Shield Volcano Is a

A shield volcano is a

A) volcanic dome on the side of a larger volcano that shields the surrounding plains from inundation by lava from the main vent.
B) very broad volcano with gently sloping sides,similar in shape to an ancient Greek shield.
C) tall volcano with steep sides,similar in shape to the central ornament of an ancient Roman shield.
D) vast lava flood-plain originating from a ground-level fissure,similar in size and topography to the Canadian Shield rock formation.