Celeste is preparing to lead a training session during a webinar.How can she engage the audience and encourage active participation?

A) Encourage the audience to take notes
B) Incorporate polling questions
C) Wear a silly hat
D) Ask for feedback by email

Incorporating polling questions is an effective way to engage the audience and encourage active participation. It allows the audience to feel involved and gives them a chance to provide feedback in real-time. Encouraging note-taking is also helpful, but not necessarily interactive. Wearing a silly hat might be distracting, and asking for feedback by email doesn't encourage participation during the webinar itself.