If unlike magnetic poles attract, how does a magnet attract an un-magnetized piece of metal such as a piece of iron? A
It does this via a process called magnetic induction which temporarily makes a magnet of the metal.

B
It can only do this if the piece of metal already is a magnet internally.

C
What actually happens is that the un-magnetized metal attracts the magnet rather than the other way around.

D
Only powerful electro-magnets, such as are found in wrecking yards, can attract unmagnetized metals.