Question

karin and linda are adoptees in sweden. karins biological parents abused drugs; she was adopted by a family that does not use drugs. lindas biological parents did not use drugs, but her adoptive siblings do. all else being equal, lindas risk of abusing drugs is ______ karins. equal to much lower than lower than higher than

Explanation:

Genetic factors play a role in drug - abuse risk. Karin has a genetic predisposition due to her biological parents' drug - abuse, while Linda does not have such genetic load from her biological parents. Although Linda's adoptive siblings use drugs which can be an environmental influence, genetic factors are significant in this context. So, Linda's risk is lower than Karin's.

Answer:

C. lower than