Paul and Peter Seem Identical in Almost Every Way

Multiple Choice

Paul and Peter seem identical in almost every way. They have the same taste in music. They have the same facial expressions and features. They drive the same car, and they work in the same professional field. Since they did not grow up together, what explanation is there for this?

A) There is an environmental basis for their behaviors.
B) They are dizygotic twins.
C) They have a strong instinctive connection.
D) There is a strong genetic basis for their behaviors.