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The degrees in the Celsius scale are the same size as the
degrees in the Kelvin scale, which has 0 as absolute zero.
So the correct choice is B.
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If the question had been
"One degree Rankin indicates the same temperature change as"
the answer would have been A since the degrees in the Fahrenheit
scale are the same size as the degrees in the Rankin scale which
has 0 as absolute zero.
If choice C had been "9/5 degree Fahrenheit" instead of "5/9", it
would have been just as correct a choice as B
If choice D has been "9/5 degree Rankin" instead of "Kelvin", it
too would have been just as correct a choice as B.
Edwin