The force of repulsion between the poles B and C is minimum and the force of attraction between the poles A and D maximum.
Answer: Repulsion, Minimum, Attraction, Maximum
Explanation:
The Concept of attraction & Repulsion
The basic concept of attraction and repulsion between two similar and opposite poles of a bar magnet is that the ends of two bar magnets with similar strongly repel each other whereas poles of opposite polarity attract each other.
Since B and C are of opposite polarity, they will repel each other with minimum forces whereas A and D are of opposite polarity as well, hence they will attract each other with maximum forces when placed together.
We can flip the options accordingly saying, B and C will have the maximum attraction while A and D will have the minimum repulsion when placed together.