On the Celsius scale of temperature, water freezes at 0° and boils at 100°; for the Fahrenheit scale, these numbers are 32 and 212. Larry is familiar with both scales; he only had one kitchen thermometer, which broke yesterday. Looking in a store for a new kitchen thermometer, Larry noticed one marked only on the Celsius scale from −20°C to 100°C—and one marked only on the Fahrenheit scale from 32°F to 212°F. The thermometers have essentially no differences in any important factors such as quality, reliability, user-friendliness, or price. Which thermometer would better suit Larry’s needs?
(1) Larry never needs his kitchen thermometer to measure temperatures of foods to a precision greater than 1°C.
(2) Larry sometimes needs his kitchen thermometer to measure various temperatures of frozen foods.
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