Whats indispensable for food intake control when it comes too inherent appetite suppression mechanism?

the choices are...
ketoacid deficiency
cholecystokinin storage
decreased blood glucose
leptin receptor stimulation

i have an idea that the answer is decreased blood glucose...but am i right? can you please let me know? thanks!
Answers:
Decreased blood glucose cause hunger so I think that's wrong.
Ketoacid deficiancy is an inherited disease.
Leptin notifies the brain of mortal "full" so I would think that was the right answer.
leptin is an appetite suppressor hormone

decreased blood glucose will produce you ravenous!

ketones depress appetite, deficiency opposite

CCK not relevant

Related Questions:
If you hold low blood pressure, is it possible to bleed too much to be capable of step into surgery?   Do you inevitability to turn to an Elite university to become a successful surgeon/doctor?   What are some features characteristic to a brain cell membrane?   What saloon did brain first hold on 2 fat 2 furouis?   Possible problems a CT technician may encounter next to agitated and confused patients for CT scan?  
  • Sports Doctor? Is it possible?
  • How could low calcium level affect the heart and why would they do what they do?
  • A few question roughly speaking Prednisone?