The boiling point of liquid nitrogen is: A. -196°C B. -27°C C. -132°C D. -273°C

The correct answer is A. -196°C.

Liquid nitrogen is a cryogenic liquid with a boiling point of -196°C. It is used in a variety of applications, including cryotherapy, medical research, and manufacturing.

Option B, -27°C, is the freezing point of water. Option C, -132°C, is the boiling point of liquid oxygen. Option D, -273°C, is absolute zero, the temperature at which all molecular motion ceases.