They turn litmus paper blue.
The answer is
C. North America
Explanation:
The heat absorbed by the water that evaporates from the body is the so called latent vaporization heat of water.
The standard latent vaporization heat of water is 2,264.705 kJ / kg.
So, you just have to divide 125 kJ / 2,264.705 kJ/kg = 0.0552 kg = 55.2 g
Answer: 55.2 g