When faced with challenging questions, pause briefly to show you're considering the inquiry, then respond with clarity. If you're unsure of an answer, admit it honestly but offer to follow up later with details. For instance, say, "That's a great question. I don't have the data on hand but will get back to you after the presentation." This approach maintains trust by showing honesty and a commitment to thoroughness. Also, anchor your response with facts or examples relevant to the question to reinforce credibility.

There's no better answer to credibility than to remain factual and composed while giving precise and short responses. If any challenging questions pop up bounce them back with a smile. Get your preps strong so you won't be surprised with any of those. If, by any chance, there is something you can't immediately answer - have courage to say that you need check it first. It's better to say it than confusing audience with fluffy answers Finally, if there is no golden answer you can always engage the audience in checking their views. It is also a means to make it an interactive experience