Answer: The correct answer is D.
Explanation:
Magnet has two poles- north and south. In a magnet, like poles repel each other and unlike poles attract each other.
For example, north pole attracts south pole and north pole repels north of a magnet.
In the given problem, the north pole of a magnet responds to the poles of other magnet. It attracts the south pole and repels the north pole.
Therefore, the correct answer is D.
