In this scene, he was the only one on the stage because they skipped his number. He was scared they must of forgotten him. He thought there was a mistake. Chief Elder startled her community. But what he realized was that he was selected to be the new Receiver.
In this scene, this is his first ever memory that The Giver gave him. It was the memory of snow. Jonas had never seen anything like this. He was amazed by snow and wondered if The Giver and his ''parents'' had seen snow before. But they haven't because of climate control. While he was walking through the snow he saw something... A SLED! But it was a red sled.
In this scene, Jonas saw the same change in Fiona's like the apple. It changed. Her hair was different. It wasn't normal. It was RED!