What is one common conclusion regarding gender constancy research?

A) Cognitive development, rather than socialization experiences, probably account for the
development of gender constancy.
B) It is rare to uncover individual differences in gender constancy; rather, most
similar-aged children think the same way about the permanence of their own gender
or sex.
C) Individual differences in gender constancy are more apparent when children are asked
hypothetical questions about other children, such as, "If I put a dress on Billy, will he
turn into a girl?".
D) Individual differences in gender constancy are more apparent when children are
shown actual pictures of boys and girls with clearly defined anatomical features, and
then asked if their sex could be changed by putting on an article of clothing not
consistent with their sex.

D