In an experiment, tennis players who were told that their performance would be used to assess only the quality of their rackets performed much better than an equally skilled group of tennis players who were told that their tennis-playing talent would be measured.
Your task
Break the argument into its conclusion and evidence, then do exactly what the question stem asks with that structure.
Common trap
Answers that sound relevant to the topic but don't connect to the argument's actual reasoning.
Winning move
Predict what a right answer must do, then test each choice against the conclusion-evidence gap.