Where the question is there one
This is an example of spontaneous recovery.
There was no reason for Mia to stop sleeping when the light was turned off, but it happened. Similarly, even though there was no reason for her to manage to sleep with the lights off again, it happened as well. It was spontaneous, meaning that she didn't have to learn it all over again - it just happened.
Answer:
कक्षा पाँच को समाजिक विषय को एकाइ ३ को प्रसन को उतर दिनु होस्