If you face hostile or difficult questions during a question-and-answer session

A) enlist the help of the audience to ridicule the questioner.
B) respond honestly and directly while keeping your cool.
C) stand your ground and answer the questions aggressively.
D) ignore anyone who asks such questions and change the subject.
E) have the person asking the question to explain their point of view.

Responding honestly and directly while remaining calm and collected is the best approach when faced with hostile or difficult questions during a Q&A session. This shows professionalism and confidence in your knowledge and abilities. Enlisting the help of the audience to ridicule the questioner or answering aggressively can come across as defensive or dismissive, which could harm your reputation. Ignoring the question or changing the subject could make you appear unprepared or uninterested. Asking the person to explain their point of view is also a good approach, but should be done politely and with an open mind.