Explanation:

When a magnet is broken into pieces, each piece will still have a north and south pole. This is because the magnetic property of a magnet is a result of the alignment of its atoms or molecules. Breaking a magnet does not change the alignment of these particles, so each piece will still retain its magnetic properties.

Reasoning:

To understand why the correct answer is option 'B', let's consider the following:

- A magnet has two poles: a north pole and a south pole.
- When a magnet is broken into two pieces, each piece will have a north and a south pole.
- If each of these two pieces is broken again, we will have a total of 4 pieces, each with a north and a south pole.
- Continuing this process, if each of the 4 pieces is broken again, we will have a total of 8 pieces, each with a north and a south pole.

Calculation:

- In the given scenario, the magnet is broken into 6 pieces.
- We know that breaking the magnet into 2 pieces gives us a total of 4 poles (2 north poles and 2 south poles).
- Breaking the magnet into 4 pieces gives us a total of 8 poles (4 north poles and 4 south poles).
- Breaking the magnet into 6 pieces would give us even more poles, as each piece will have a north and a south pole.
- Therefore, the correct answer is option 'B' - twelve poles.

Conclusion:

Breaking a magnet into multiple pieces does not change the number of poles present. Each piece will still have a north and a south pole, and the total number of poles will increase with the number of pieces. In this case, breaking the magnet into 6 pieces would result in twelve poles.