_____rock - often formed when hot lava drips down the sides of _____.
a. Igneous rock - often formed when hot lava drips down the sides of a volcano.
b. Sedimentary rock - often formed when hot lava drips down the sides of a canyon.
c. Metamorphic rock - often formed when hot lava drips down the sides of a mountain.
d. Granite rock - often formed when hot lava drips down the sides of a cliff.