What evidence (if true)would show importance of "shared environment" in personality development?

Question

Quizplus · Accepted Answer

If there is a strong correlation between parents and their adopted children, it suggests that the environment provided by the parents has a significant impact on personality development, rather than genetics. This would support the importance of shared environment. A and C can be explained by genetics and therefore do not suggest the importance of shared environment. D would actually suggest that shared environment does not play a significant role, as there is a weak correlation between parents and their biological children.

What Evidence (If True)would Show Importance of "Shared Environment" in Personality