Final answer:
The correct answer is c) Her parents. Bipolar disorder has a strong genetic component, meaning that having a family member with the disorder increases an individual's risk of developing it.
Step-by-step explanation:
The correct answer is c) Her parents.
Bipolar disorder has a strong genetic component, meaning that having a family member with the disorder increases an individual's risk of developing it.
In this case, Melanie's parents are at the greatest risk of developing bipolar disorder because they are her closest relatives and share the most genetic similarities with her.