The north pole of a magnet brought near a steel ball attracts the ball. The magnet is then reversed and the south pole is brought near the steel ball and it is still attracted to the magnet. Explain why this occurs using the word domain in your response. * please help me with this

Engineers find a new metal that is stronger than steel but much lighter. this material is also significantly cheaper than what is currently used for most aircraft, available in large quantities, and easy to manufacture. the engineers are excited because this new material will lower the costs of buying and operating airplanes for companies. what is probably the best step for the engineers to make next?