Answer:
gamma rays
Explanation:
The light spectrum goes (from left to right)
gamma rays, x-rays, ultraviolet rays, visible light, infrared rays, radar, radio waves.
Hope this helps!
If you attached the excerpt, it would be easier to answer your question. Anyway I'll try to guess by giving it few lines in which was mentioned about Ravi who was forgotten. One of the most obvious it the line "They had quite forgotten him.". But the strongest one is this: <span>"Could he hear the children’s voices? It seemed to him that he could. It seemed to him that he could hear them chanting, singing, laughing. But what about the game? What had happened? Could it be over? How could it when he was still not found?"
I hope it will help.</span>
