The correct option is D Both B and C are correct.
The break time lasts for 1 hour.
Let us consider all the options one by one.
In Option A,
For start time, the hour hand is between 6 and 7, and the minute hand points to 6.
So, the time is half past six.
For end time, the hour hand is pointing at 7 and the minute hand is pointing at 12.
So, the time is seven o’clock.
The time duration between half past six and seven o’clock is half an hour.
So, option A is not the correct answer.
In Option B,
For start time, the hour hand points to 5 and the minute hand points to 12.
So the time is five o’clock.
For end time, the hour hand points to 6 and the minute hand points to 12.
So, the time is six o’clock.
The time duration between five o’clock and six o’clock is one hour.
So, Option B can be the correct answer.
In Option C,
For start time, the hour hand is between 11 and 12, and the minute hand points to 6.
So, the time is half past eleven.
For end time, the hour hand is between 12 and 1, and the minute hand points to 6.
So, the time is half past twelve.
The time duration between half past eleven and half past twelve is one hour.
So, Option C can also be the correct answer.
Therefore, we can conclude that both Option B and C are correct.