Which of the following carbohydrates is the primary source of energy for the brain?

A Glucose ✓
B Fructose
C Galactose
D Lactose

Explanation

Glucose is the primary source of energy for the brain, which relies heavily on glucose for its metabolic needs.

Source

Guyton and Hall Textbook of Medical Physiology
Carbohydrate Metabolism Physiology Brain Metabolism Easy MEDICAL Confidence: high