Question

which of the following would be a clue that a rock is igneous?
choose one option
a it has crystals.
b it has a complete fossil in it.
c it has bands.
d it is very soft.

Explanation:

Igneous rocks form from the cooling and solidification of magma or lava. As the molten material cools, minerals crystallize. Fossils are typically found in sedimentary rocks (formed from the accumulation of sediments), banding is a characteristic of metamorphic rocks (formed from the alteration of existing rocks due to heat and pressure), and softness is not a defining feature of igneous rocks.

Answer:

A. It has crystals.