According to Most Developmentalists, What Is the Major Caveat Regarding

According to most developmentalists, what is the major caveat regarding the interpretation of the research findings of sex differences in behaviour?

A) The data are indicative of group differences and not how an individual may behave.
B) Most of the data reflect the performance of white, middle-class children and are not representative of the general population.
C) It is rare for data to be collected in naturalistic settings.
D) There is wide variation between studies in how the dependent variables have been operationalized.