I think an informal writing style helps the reader to have a vivid, mental thinking about the writing, and it helps the reader to think about the question without stating it like you have to find the themes in an essays or writing.
The answer is 'a' All of them have to do with fun
When you are bouncy ,you feel light as a ball and feel like skipping and hopping around.
Well, the radio could have a different tone than the novel. The novel could be informative or based on an experience. The radio could be wrong or not-specific with the War of Worlds.
