The correct answer is D. All of the above.
Gabriel Daniel Fahrenheit was a German physicist who devised the Fahrenheit temperature scale and developed the mercury thermometer in 1714.
The Fahrenheit scale is a temperature scale that was created by Daniel Gabriel Fahrenheit in 1724. It is the second most common temperature scale in use today, after the Celsius scale. The Fahrenheit scale is based on the freezing point of water at 32 degrees Fahrenheit and the boiling point of water at 212 degrees Fahrenheit.
The mercury thermometer is a type of thermometer that uses mercury as the working fluid. It was invented by Daniel Gabriel Fahrenheit in 1714. The mercury thermometer is the most common type of thermometer in use today. It is used to measure temperature in a variety of applications, including medicine, science, and industry.