After Kenneth's reply, John could remember that he had seen in movies that people cover themselves in blankets during fires. He asked Kenneth 'how would you explain this activity?' Is it true that blankets save us from fires? Can you give us a reason.
Kenneth: Yes blankets save us from fires. But I don't know the exact reason. Maybe Sam can help us.
John: Yes Sam you must be knowing this.
Sam: Yes, I know........................
Which of the following can be Sam's answer?
We know that, for anything to burn oxygen is required. Oxygen supports burning and is a necessary requirement for anything to burn under normal conditions. Now if we can cut-off the oxygen supply to the fire by any means, we would be able to restrict the fire from spreading. A blanket helps in cutting-off the oxygen supply to the and thus stops fire from spreading further and so the statement "Blankets cut off the supply of oxygen to fire and hence stop fire from spreading” is correct.