Concept:A compass needle aligns itself along the direction of the magnetic field at its position.
Explanation:Outside a bar magnet, the magnetic field direction is from the north pole to the south pole.
The north pole of a compass needle points in this field direction.
So, near the north pole of the magnet, the needle must point away from the north pole.
Near the south pole, the needle must point toward the south pole.
Magnetic field lines form continuous closed curves, so the needle directions must follow the same pattern.
The correct diagram is therefore the one that shows the compass needles following the field outward from the north pole and inward to the south pole.
Answer:The correct diagram is the one in which the compass needles point away from the north pole of the magnet and toward its south pole.
