Answer: A.Unlike lava, pyroclastic material erupts onto Earth’s surface.
Explanation:
The pyroclastic material is the one that erupts with an explosive volcanic eruption like that of lava eruption. The pyroclastic erupts by ejecting the fragments, resulting in ashfall deposits, it flows out with an ash deposit on the surface of the earth. The fragmented material spreads on the Earth's surface. The fragments are of grain size.
