The three characteristics that apply to an effective opening statement are:
- states only facts - An effective opening statement should be based on factual information to establish credibility.
- logical - It should present a logical framework that sets the stage for the argument or discussion that follows.
- debatable - It should present a perspective or argument that invites discussion or contest, making it debatable.
So, the correct answers are:
- states only facts
- logical
- debatable