This document discusses challenges that may occur during presentations and provides strategies for managing question and answer sessions, disruptions, contingencies, time, and different situations. It recommends preparing for questions, practicing responses, and getting feedback. When facing difficult audiences, it advises keeping calm, redirecting questions, and focusing on topics rather than people. For time management, it suggests using timekeepers and rehearsing to finish on schedule. In the event of disasters, the document states to remain calm and ask for help, acknowledging any errors. It also provides examples of potential problems to role play, such as power failures or medical emergencies during a presentation.