To discover what percentage of teenagers believe in telekinesis-the psychic ability to move objects without physically touching them-a recent survey asked a representative sample of teenagers whether they agreed with the following statement: "A person's thoughts can influence the movement of physical objects."
Conclusion
The survey's responses are also ambiguous.
Evidence (because)
The statement the survey asked about was ambiguous.
Evaluate
This argument is recycling the same trait in its premise and its conclusion.
Because the statement the survey asked about was ambiguous, the responses to the survey will be ambiguous.
Goal
It seems like the author's thinking is guided by some assumption like,