Answer:
I think option c is correct.
The power of attorney is usually decide upon by the patient in advance. The power of attorney has the right to make medical decisions for the patient if the patient is incapable of making decisions for themselves due to illness or disease progression such as dementia or Alzheimer’s.
The mechanisms regulating systemic iron homeostasis are largely centred on the liver and involve two molecules, hepcidin and ferroportin, that work together to regulate the flow of iron from cells into the systemic circulation.