Answer:
A. characteristic of fire
Step-by-step explanation:
The term "igneous" comes from the Latin word "ignis" which means fire. And we use this word mainly to refer to something that resembles fire or contains fire; and to refer to one of the three main rock types: igneous rock, which it's a type of rock that is formed through the cooling and solidification of magma or lava, which it's a very hot liquid.