Answer: Option (a) is the correct answer.
Step-by-step explanation:
Magnetic poles are the poles placed at each end of a bar magnet. Both theses poles are different from each other in a bar magnet.
That is, if one pole a bar magnet is north pole then other pole will be south pole.
Like opposite charges attract each other, the opposite poles a bar magnet attract each other.
For example, north pole will be attracted by a south pole and vice-versa.
Thus, we can conclude that the statement north and south poles attract each other correctly describes the interaction between magnetic poles.