Figure 4.4. (a–d) shows the readings on four different thermometers. Indicate which of the reading shows the normal human body temperature?

First we know that the normal human body temperature is 37°C OR 98.6°F.

In the above figure, we notice that it is in Celsius scale since the highest temperature possible is 42 degree. So it is surely Celsius scale and we know that in Celsius it will be 37 degrees which are depicted in figure C.

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