Concept:Magnetic materials differ in how easily they become magnetized and how long they keep that magnetism.
Steel is a hard magnetic material that strongly resists demagnetization.
Explanation:Steel requires a stronger magnetic field to become magnetized compared to soft iron.
However, once magnetized, steel retains its magnetism for a very long time.
Because steel is not easily demagnetized, it is ideal for making permanent magnets.
Soft iron, on the other hand, is easily magnetized and demagnetized, so it is used for temporary magnets.
Therefore, steel is not suitable for temporary magnets.
It also retains its magnetism longer than iron, not less.
Consequently, the statement that steel can be used for making permanent magnets is correct.
Answer:C. It can be used for making permanent magnets.