14 4 points A researcher wanted to investigate gender differences in aggressive behavior among adolescents. She had a friend who coached a boys' football team and another friend who coached a girls' softball team, The researcher followed both teams across a five year span, measuring acts of physical aggression on the playing field when those same athletes were 12, 14. and 16 years of age, The frequency of aggressive acts is graphed below. 70 60 50 40 - Boys Acts of Aggression 30 20 10 0 12 14 16 Age in Years Based on the information provided in the scenario: (a) Name one confound that could affect the interpretation of results, (B) explain why it is a problem and (c) how the problem could be fixed. B A . T. E XKEE 12pl Paragraph