Respuesta :
The channel tunnel is a very fast way to get to England from France. The author mentioned the train fire to show the advantage of the escape tunnel.
Summary of the excerpt
The passage talks about the tunnels that was designed to connect the nations of England and France.
According to this passage, people were afraid of the tunnel due to its length so it was designed in such a way that it would serve other purposes and guarantee safety of people.
The author went on to mention the fire to show that even when the incident broke out, people were safe because they had the escape route tunnel at their disposal.
Read more on railroad tunnels here: https://brainly.com/question/1106936