Which of the Following Is Recommended During Delivery of a Presentation

Which of the following is recommended during delivery of a presentation?

A) Watch the audience for feedback and make appropriate adjustments in the length and content of your speech.
B) Stay behind the lectern, rather than causing distraction by moving around.
C) Make eye contact with every person in the audience, even if only for a second.
D) Keep breathing shallow and regular through your nose and mouth.