An essential skill in any job that requires talking & handling people is speaking well and communicating effectively.

Handling challenging questions during a speech can be effectively managed by  a few  practical and strategic ways using conflict resolution techniques.
Get yourself some time to think by
practicing listening actively when a question comes up and then repeating  it in your own words to check if you have clarity on what is asked.
Acknowledge the questions with empathic voice and body language can  ease and reduce tensions and help  build the flow of  communication.
Get yourself back into the arena
by reframing the questions to align with your context.
Using an assertive voice shows command over the context.

Always remembering the goal is not to score a point but or win an argument but to build and sustain a positive and respectful connection.

©Savvy Raj