Neither of these are minerals, B.
Its not A because, they are not natural materials but instead made up of natural materials, like a rubber tree.
Its not C because, like I said, plastic is made from rubber trees, this garentees it doesnt have a crystal structure.
Its not D because, concrete is not a mineral and has indefinite composition.
DNA is found in the nucleus
The answer is blood type bc you won’t know their blood type by just observing them
Answer:
licking soggy toes lolllll
