**Core Concept**
After a meal, the body undergoes a physiological response to manage the increase in blood glucose levels. This involves the release of various hormones, including insulin, glucagon, and incretin hormones, which work together to regulate glucose metabolism.

**Why the Correct Answer is Right**
The normal human body responds to a meal by increasing blood glucose levels, which triggers the release of insulin from the pancreas. Insulin stimulates the uptake of glucose by cells, particularly in muscles and adipose tissue, thereby lowering blood glucose levels. This process is facilitated by the insulin receptor, a transmembrane receptor that activates various signaling pathways to increase glucose uptake.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because it does not accurately reflect the range of normal blood glucose levels after a meal.
* **Option B:** This option is incorrect because it is not a commonly accepted range for normal blood glucose levels after a meal.
* **Option C:** This option is incorrect because it is not a physiologically accurate representation of the body's response to a meal.

**Clinical Pearl / High-Yield Fact**
It is essential for clinicians to understand the physiological response to meals and the role of various hormones in regulating glucose metabolism. This knowledge is crucial for diagnosing and managing glucose-related disorders, such as diabetes mellitus.

**Correct Answer: C. 7.8-11.1 mmol/L**