**Core Concept**
Glucose transporters are a family of membrane proteins that facilitate the transport of glucose across cell membranes. In pancreatic β cells, glucose transporters play a crucial role in glucose sensing and insulin secretion.

**Why the Correct Answer is Right**
Glucose transporters in β cells are primarily GLUT2 (sodium-independent glucose transporter). GLUT2 allows glucose to enter the β cells, where it is then sensed by the enzyme glucokinase. This triggers a cascade of reactions that ultimately leads to insulin secretion. The high Km of glucokinase for glucose ensures that insulin secretion is glucose-dependent, making GLUT2 a key player in glucose homeostasis.

**Why Each Wrong Option is Incorrect**
**Option A:** This is incorrect because GLUT1 is typically expressed in red blood cells and the blood-brain barrier, where it maintains a high glucose uptake.
**Option B:** This is incorrect because SGLT1 (sodium-glucose cotransporter 1) is primarily found in the small intestine, where it facilitates glucose absorption from the gut lumen.
**Option C:** This is incorrect because SGLT2 (sodium-glucose cotransporter 2) is primarily found in the kidneys, where it facilitates glucose reabsorption from the renal filtrate.

**Clinical Pearl / High-Yield Fact**
It's essential to remember that the glucose-dependent insulin secretion mechanism is disrupted in diabetes mellitus, leading to hyperglycemia and insulin resistance.

**Correct Answer: C. SGLT2**