What is the zero point for Fahrenheit?

The zero point for the Fahrenheit scale is not 459.67; rather, it is defined at 32 degrees. This value corresponds to the freezing point of water.

To provide some context, the Fahrenheit scale was developed by Daniel Gabriel Fahrenheit in the early 18th century, and he set the zero point based on the coldest temperature he could achieve in a controlled environment, which was an approximation of the freezing point of a brine solution. However, in terms of practical temperature measurements, the freezing point of water was established at 32 degrees Fahrenheit, which is a crucial reference point.

The other options represent temperatures that have significance on the Fahrenheit scale, but they do not correctly denote the zero point of the scale. For instance, -40 degrees Fahrenheit is an interesting point where the Fahrenheit and Celsius scales intersect, while 0 degrees Fahrenheit was associated with a specific brine solution temperature measured by Fahrenheit himself. Nonetheless, for common measurements related to freezing and other environmental conditions, the zero point of Fahrenheit used in everyday context is accurately identified as 32 degrees.