Communication Strategies

According to Motley, WHICH of the techniques and strategies below are not advisable when giving a presentation? Explain WHY he maintained this. Also, for two of the points state whether you agree with him (200 words)
Watch video: https://m.youtube.com/watch?v=GYfHQvi2NAg

· Memorising what you want to say
· Use of visuals
· A carefully planned structure
· Relaxation techniques beforehand
· Focusing on body language
· Focusing on aspects of your voice