Candice learns that ll magnets have two magnetic poles.which of the following observations would best support this statement.

1.the North Pole of a compass needle is attracted to the South Pole of a bar magnet.
2.the strength of a horseshoe magnets magnetic field decreases as the magnetism pulled away from another object.
3.when a bar magnet is cut in half ,each half has a North Pole and a South Pole.
4.when a electric current flows through a wire , a magnetic field forms around the wire.

Question

Candice learns that ll magnets have two magnetic poles.which of the following observations would best support this statement. 

1.the North Pole of a compass needle is attracted to the South Pole of a bar magnet.
2.the strength of a horseshoe magnets magnetic field decreases as the magnetism pulled away from another object.
3.when a bar magnet is cut in half ,each half has a North Pole and a South Pole.
4.when a electric current flows through a wire , a magnetic field forms around the wire.