Question

Which of the following is not considered to be a rock

Answer 1

Among which options!?..

Answer 2

Hello there!

The answer to your question "Which of the following is not considered to be a rock"?

a. coal → organic sedimentary rock

b. sandstone → sedimentary rock

c. pumice → igneous rock

d. lava

Lava is the molten liquid that is released by a volcanic eruption. Depending on conditions how it cools, different igneous rocks can be formed. Also, rocks should be in solid form but lava is liquid.

I hope this will help you!