Laura and Celia are identical twins. They were adopted at birth by different families and raised in different environments. However, there are a lot of behavioral similarities between them. In the context of developmental psychology, which of the following best explains this phenomenon?
A) Their similarities reflect the influence of nature on development.
B) Their similarities are a result of differences in nature.
C) Their similarities reflect the opposition that nurture poses to the nature.
D) Their similarities prove that they were not affected by their genetic makeup.