Answer:
A change of 1 °F
Step-by-step explanation:
I have never heard of a Thomson degree. I presume it is the same as 1 K, because the British physicist William Thomson is better known as Lord Kelvin, who invented the Kelvin scale.
Although the Kelvin and Celsius scales have different definitions, 1 K is the size as 1 °C.
On the Celsius scale, the difference between the boiling point and freezing point of water is divided into 100 °.
On the Fahrenheit scale, the same difference is divided into 180 °.
Thus, a Fahrenheit degree represents the smallest temperature change.
