Fact: rocks sometimes contain iron
Question: A student is studying different aspects of science, and today's area is magnetic properties. The student has a magnet, and is testing which sort of objects the magnet will have an attraction to. The student is surprised that the magnet tugs itself towards

What's the answer? Available options:
a). a plastic cup.
b). a plaster wall.
c). a grey stone.
d). a paper plate.
c).