Your Textbook Discusses Reasons for the Modest Cultural Differences in Personality

Your textbook discusses reasons for the modest cultural differences in personality traits found across cultures.It is possible that factors other than culture are responsible for these differences.To know for certain that personality is affected by culture and not other factors,which of the following would be necessary?

A) a measurement of people across time, from infancy to adulthood, across all cultures
B) the creation of standardized cultural norms across the world and then a measurement of personality traits
C) a measurement of people using assessments that are unique to their culture (e.g., use projective tests in some cultures and objective tests in others)
D) the use of culturally specific teams of researchers to conduct the research