The three characteristics that apply to an effective opening statement are:
- Debatable - An effective opening statement often presents a claim or viewpoint that can be argued or discussed.
- Logical - It should present a coherent and rational argument that lays the foundation for the discussion that follows.
- States the writer’s opinion - An effective opening statement typically reflects the writer's viewpoint or position on the topic being discussed.
The other options, such as "states only facts," "includes a call to action," and "avoids controversy," may not necessarily apply to an effective opening statement depending on the context and intent.