[" A ferromagnetic substance becomes a permanent magnet when it is placed in a magnetic "],[" field because "]

A ferromagnetic substance becomes the permanent magnet when it is placed in the magnetic field because

Statement I : A ferromagnetic substance becomes a permanent magnet, when it is placed in a magnetic field. Statement II : All the domains get oriented in the direction of magnetic field.

Statement I : A ferromagnetic substance becomes a permanent magnet, when it is placed in a magnetic field. Statement II : All the domains get oriented in the direction of magnetic field.

Explain why ferromagnetic substances are used to make permanent magnets.