After a Class in Developmental Psychology, a Student Asked the Professor

Multiple Choice

After a class in developmental psychology, a student asked the professor a question concerning the effects of the environment on the student and her brother. When answering the question the professor said, "The research seems to indicate that nonshared environment plays a significant role in the development of siblings." What was the professor suggesting in his answer to this student's question?

A) Siblings have to compete for space and resources.
B) Siblings in a family do not share 100% of their genes.
C) Each child has an environment that differs from his/her siblings.
D) Children in a family share an environment different from other families.