Answer:
The smallest unit interval is in the Fahrenheit scale
Explanation:
For the conversion between Celsius and Fahrenheit:
Δ1°C=Δ1.8°FΔ1°C=Δ1.8°F
For the conversion between Kelvin and Celsius:
Δ1K=Δ1°CΔ1K=Δ1°C
Thus, a 1-degree change in Celsius is equivalent to a 1.8-degree change in Fahrenheit, which means the Fahrenheit scale has smaller intervals than the Celsius or Kelvin scales.
The correct answer is C. Fahrenheit.