Part D Brainstorm ideas about which materials you'll use in your device and how they'll be put together. If you don't have the ideal materials on hand, list any equivalent materials you'll use.​

Which set of characteristics best describes igneous rock? a) largest type of rock, made of organic matter, hardest type of rock b) least abundant type of rock, made of other rocks, made mostly of minerals c) found on all continents, contains wavy bands of stripes, contains fossils d) most abundant type in earth's crust, made of magma/lava, contains no fossils