This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
Glucagon will decrease which of the following? 
Select and explain. 
A. Glycogenolysis., B. Gluconeogenesis., C. Glycogenesis., D. Blood glucose.
C: Glycogenesis.
Answer: C: Glycogenesis. 
Explanation: Glucagon is secreted from the pancreas in response to reduced plasma glucose due to fasting and exercise. It functions to mobilize energy stores (glucose) and return blood glucose to normal levels. Glycogen synthesis (glycogenesis) will not occur in response to glucagon.