The correct answer is C: Reassign the prime center's impedance value. A Smith chart is normalized by reassigning the prime center's impedance value. Normalization means setting the center point to represent a specific impedance (typically 1.0 or 50 ohms). Normalizing a Smith chart means choosing what impedance the center point represents. The center typically represents 1.0 (normalized) or a specific value like 50 ohms. All impedances on the chart are then relative to this center value. For example, if you normalize to 50 ohms, the center is 50 ohms, and other points represent impedances relative to 50 ohms. Normalization makes the chart universal - you can use the same chart for any impedance range by choosing the appropriate normalization value. This is why Smith charts are so versatile.