Correct option is B
Th correct answer is The pole strength of each new piece will be one-fourth of the original.
The pole strength of each new piece will be one-fourth of the original. When a magnet is cut into parts along its length, the pole strength of each part becomes a fraction of the original magnet’s pole strength.
In this case, since the magnet is divided into four parts, the pole strength of each piece would be one-fourth of the originals.