I can help, but I will not write the whole thing for you. What is the topic on?
Hello. You did not provide the article to which this question refers, which makes it impossible for it to be answered accurately. However, I will try to help you in the best possible way.
It is only possible to know the central idea of an article by reading the article. Generally, this main idea is exposed in the first paragraphs, as it allows the reader to understand the subject that will be approached. This is because the central idea is the main subject to which the article wishes to discuss and argue. Therefore, to answer your question you will need to find this subject in the article.
Start a fire. It sets the entire island on fire and puts them in danger. As far as irony goes, fire is a symbol of hope in the novel, so it is ironic that hope is the thing that would destroy them (if they were not found just in time).
"<span> Polish and British cryptologists had already developed alternative methods of recovering the daily keys. "
Just before it, the passage says "the Germans introduced additional rotors and plugs... increase the number of possible combinations".
As this was expected, so the Polish and British "<em>already</em> developed alternative methods"
hope this helps</span>
