A thermometer measures temperature to the nearest 0.5°C which measurement shows an appropriate level of precision for the thermometer.
A.21.55°C
B20°C
C.16°C
D16.0°C
The temperature which has best degree of precision would
actually be the temperature reading which has similar decimal place with the
error. So the best answer would have 1 decimal and from the choices above, this
would be: