Which nutrient is essential for the synthesis of creatine, a crucial energy source for muscle contraction?

A Vitamin B12
B Vitamin D
C Arginine ✓
D Glycine

Explanation

Arginine is an amino acid that plays a critical role in the synthesis of creatine, which is a vital energy source for muscle contraction.

Source

Guyton and Hall Textbook of Medical Physiology
Metabolic and Nutritional Disorders Nutrition and Metabolism Energy Metabolism Easy MEDICAL Confidence: high