Which of the following materials is NOT produced by erupting volcanoes?

A) sandstone
B) basaltic lava
C) obsidian/glass
D) ash

Sandstone

A sedimentary rock consisting of sand-sized mineral particles or rock fragments.

Basaltic Lava

A type of magma or lava that is low in silica and has a relatively low viscosity, leading to smoother flow characteristics.

Obsidian/Glass

A natural volcanic glass formed from the rapid cooling of acidic lava, known for its conchoidal fracture and sharp edges.