What Evidence Suggests a Hereditary Basis for Extraversion?​

What evidence suggests a hereditary basis for extraversion?​

A) Twins resemble each other in extraversion more closely than brother and sister do.
B) ​Monozygotic twins are more similar in extraversion than dizygotic twins are.
C) ​Dizygotic twins are more similar in extraversion than monozygotic twins are.
D) ​Adopted children resemble their adopting parents in extraversion.

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