While you develop calloused feet when you go barefoot for a summer, your neighbor remains a tenderfoot by protecting her feet with shoes. the differences in skin toughness between you and your neighbor are best attributed toa)the molecular structure of genes. b)person-to-person genetic variations. c)the impact of epigenetic marks on gene expression. d)the interaction of genetic and environmental influences

D)the interaction of genetic and environmental influences

Explanation:

Here, the neighbor takes care of her feet as she knows that her feet will develop callous if she does not take protection. You on the other hand knowing that your feet will develop callous do not take the necessary steps to protect your feet.

The genetic and environmental influences of both of you are different. In one case the person takes protection while in the other case the person walks barefoot knowing that they will develop callouses on the feet.

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