After a meal, the healthy person's pancreas secretes insulin in order to metabolize the nutrients from food now available in the blood and uptake glucose into body structures such as the liver, muscle cells and fats. This eliminates options A and D. In response to higher glucose levels in the blood, the liver stops breaking down the storage form of glucose known as glycogen and the newly available glucose is converted to the storage form, thereby eliminating option B.
What does not occur after eating a meal is the pancreatic secretion of glucagon, option C. The pancreas does so when blood glucose concentrations are low. As mentioned above, a meal increases blood glucose concentrations.