Answer: A) Non shared environmental influences
Explanation: Non shared environment influences are any aspects of the environment and any influences that can be different for different children within the same family. In this case , Jack was encouraged to run because he is a boy thereby enabling him to be able to run up the hill much faster than Jill despite the fact that they are both children in the same family.
Yes, the story surprised me very much. However, I don’t think these similarities are something the twins inherited, I think they are coincidences. You can’t inherit the same wife or other similarity that are not decided by genes.
For area under the graph the distance - time is non applicable
