Which of the following is NOT a limitation of research exploring the relationship between age and driving anger?
A. There is likely to be an interaction between age and sex, and previous samples have not included a sufficient representation of both sexes across diverse age ranges.
B. Research examining on-road anger has mostly included young drivers, and true age differences are less likely to be apparent when using such small age ranges.
C. Research examining on-road anger has focused almost exclusively on car drivers, ignoring other road users.
D. Different jurisdictions allow drivers to get their licence at different ages, which may in turn affect the relationship between age and driving anger.
Answer: C