The diagram shows the result when a student placed a magnet under a piece of paper, then sprinkled iron shavings on the paper. The iron shavings are distrubuted this way because magnets....
a
have magnetic fields that flow from one pole of the magnet to the other.
b
have multiple magnetic fields that attract the shavings with different strengths.
c
have uneven magnetic fields that attract the shavings in random patterns.
d
have magnetic fields that repel magnetic materials and push the shavings away.