The first thermometer was developed by

Correct Option is: C. Galileo

Solution:

Galileo Galilei is claimed to be the inventor of the thermometer.

But the instrument he invented cannot be called a thermometer.

Thermometer measures the temperature difference, but Galileo’s instruments do not do this.

It only indicated the temperature difference.

So, it should be called a thermoscope which tells the temperature is higher, lower or the same.