The correct option is
B Lunch break
The time for self study is for one hour from half past ten.
So, the self-study time starts at half past ten and ends at half past eleven.
At half past ten, the hour hand will be between 10 and 11, and the minute hand will point to 6.
At half past eleven, the hour hand will be between 11 and 12, and the minute hand will point to 6.
Lunch break starts after self-study time. Lunch break is also for one hour.
So the lunch break starts at half past eleven and ends at half past twelve.
The assessment which lasts for one hour starts after the lunch break ends.
So, the assessment starts at half past twelve and ends at half past one.
So, in the given clock, the hour hand is between 11 and 12 and the minute hand points to 6.
Thus, we can say that the clock shows half past eleven.
Lunch break starts at half past eleven.
Therefore, we can say that the lunch break time is shown on the clock.