When planning for the delivery of a presentation,which of these is an important way to build self-confidence?

A) Allow the audience to ask questions at the beginning
B) Have key quotes written out
C) Know the material
D) Prepare background information for extemporaneous presentations
E) Don't use any notes

Knowing the material is essential to building self-confidence when delivering a presentation. When you know your material thoroughly, you will be able to speak about it confidently and without hesitation, which can help you build credibility with your audience. Other factors such as having key quotes written out and preparing background information for extemporaneous presentations can also help you build self-confidence, but they are not as important as knowing the material. Allowing the audience to ask questions at the beginning and not using any notes can be helpful for engaging your audience and delivering a more polished presentation, but they are not necessarily essential for building self-confidence.