Making a magnetic substance a magnet by bringing it closer to another magnet without touching it, is:
Magnetic induction method
Explanation for the correct answer:
Magnetic induction is a method of magnetizing a magnetic material without touching it with a magnet.
Explanation for the incorrect answers:
In all other methods viz single touch method, double touch method, and electrical method, we need to bring the material in contact with the magnet.
Hence the correct option is A.