A. There would be no impact on the passage
B. It would lack realism, since it would imply that the authors are expecting children to do chores just as well as adults
C. It would fail to highlight that practice is sometimes more important than perfection
D. It would fail to highlight that the findings of the study are applicable to children as well as to professionals
Explanation: Elimination is the best way to go here. A is self-evidently incorrect as the first line is important is setting a message. B and C are not stated or implied. D is incorrect because the study was conducted on children who went on to become high-achievers and was not necessarily a professional-oriented study.
