Answering questions can be your worst nightmare. In many situations around the world it is the fear that we might answer them wrongly or draw the wrong impression from our response. The writer certainly has questions he/she must be able to answer about their work. They have to know the answers to the questions because for most of these questions, the author has already asked it to himself (sometimes instinctively, without knowing). The author has character questions to answer as well. But when relating to your story line, have you asked the "tough questions"?
Asking tough questions can bring forth story ideas and room for development. For example, who do I save first? Knowing that there is a possibility you will not be able to save everyone, put in an extreme situation, and think of what you would do if you and the people you know were the characters. How horrible it would be for these characters in their dying moments to see you choose from them in order of importance. We do this all the time when watching movies and reading books. We relate to the characters in this way. We try to feel what they are experiencing.
