After Watching a Recent News Item About Whether to Keep

After watching a recent news item about whether to keep individuals in a persistent vegetative state on life support or not, you feel strongly that you would like to specify what care you would want in a similar circumstance. A document that specifies this is called a(n) :

A) Personal medical edict
B) Protocol forecast for personal care
C) Advance-care directive
D) Personal decree of care directives