He lost the thread of his argument.
There is no real answer to that. A presentation can have as many as you need. Every presentation is different, so it is up to the person creating the presentation as to what should be in it.
A presentation should serve as how a given system operates or works.
The main points of the presentation
You should choose thread that complements your fabric. If your fabric is a synthetic blend, your thread should be a blend, too. If your fabric is not a blend, your thread shouldn't be either.
An argument should explain and support the point that you are trying to make.
well it depends :/ in my opinion sentencesAnd which should be in an outline for a presentation are :keywordsexamplesmain points hope it works :)
You SHOULD NOT ask questions during a presentation unless invited to do so by the presenter.