Statement 1: When iron fillings are spread around a magnet, they align themselves as shown.
Statement 2: Magnetic field of the magnet, apply force on each filing which makes them get oriented in the mentioned way.
Both statements are correct and statement 2 is the correct explanation for statement 1
Iron fillings are magnetic material when they are brought in an external magnetic field they experience a force. This magnetic force makes them align along the magnetic field lines.