The Study of Television's Behavioral Effects in Brazil Illustrates All

The study of television's behavioral effects in Brazil illustrates all of the following EXCEPT

A) how investigators must carefully choose between a qualitative or quantitative data model.
B) how the scientific method is not limited to ethnology but applies to any anthropological endeavor that formulates research questions and gathers or uses systematic data to test hypotheses.
C) the value of cross-cultural research, which in this case enables the researchers to distinguish the effects of years of TV exposure and other changes associated with aging.
D) how anthropological studies may deal with several research questions.
E) the challenges researchers often face when determining whether they are observing effects or correlations in their findings.