Because Marla Is the First Girl in Her Fourth-Grade Class

Multiple Choice

Because Marla is the first girl in her fourth-grade class to sexually mature,she is sometimes teased and rejected by her classmates.Marla's sense of social isolation and embarrassment result from the interaction of

A) dizygotic development and epigenetic marks.
B) evolution and natural selection.
C) genes and chromosomes.
D) nature and nurture.