Giving a good presentation will take time to prepare. You should not only prepare for the actual presentation, but you should also prepare for answering any questions that you may get. If you give a great presentation, but you fail to correctly answer any questions that you get from the audience you won’t leave a good impression with your audience.
Therefore it is important to prepare also for any questions that you may get. What are the complex parts of your presentation for which you may get questions? What are the parts of your presentation that are not covered in detail, that may trigger questions? What is in the news that may result in questions? What is on the mind of your audience and important for them that may cause them asking questions? Think about this and get prepared to answer questions. The book that is part of the public speaking kit includes a section with multiple tips and tricks about answering questions from your audience. What to do if you don’t know the answer? Read it in the book Public Speaking Excellence.