Context: This is a piece of scoria. Scoria is usually formed near volcanoes. It comes from melted rock that is rich in iron and magnesium.
Do you see the hollow gaps in this rock? The gaps come from air and water bubbles that became trapped while the melted rock was cooling.
What type of rock is scoria?
A. igneous
B. metamorphic
C. sedimentary
Select the correct answer from the given choices and respond with the letter of the chosen option.
Answer: A