4. A 45-year-old female is diagnosed with Type 2 Diabetes Mellitus. Her physician recommends metformin as first-line therapy. Medicinally, what is the primary mechanism of action of metformin that contributes to its glucose-lowering effect?
A.
Increasing insulin secretion from the pancreas.
B.
Decreasing hepatic glucose production.
✓
C.
Enhancing glucose absorption from the gut.
D.
Increasing glucose reabsorption in the kidneys.
