Best practices for the question-and-answer session after a presentation include

A) counting on being able to set ground rules for the session.
B) assuming that you'll be able to handle questions without some preparation.
C) anticipating likely questions and thinking through your answers.
D) acknowledging that the question-and-answer session is relatively unimportant.
E) preparing questions and answers in the event none are asked.

Anticipating likely questions and thinking through your answers is a crucial best practice for the question-and-answer session after a presentation. This allows the presenter to be better prepared and provide thoughtful responses to questions.

Answer: E
While it's not necessary to bring prepared questions and answers to a Q&A session, it can be helpful in the event that none are asked. This allows the presenter to still engage the audience and provide additional value.