Question: Water puddles on a sidewalk evaporate when the Sun heats the water. Which of these best describes what is happening as the water evaporates?

  Options: 
 A. Water changes phase as it releases heat to the environment.
 B. Water boils as it absorbs energy from the sidewalk.
 C. Water becomes a gas as it absorbs energy from the Sun.
 D. Water evaporates as its thermal energy is transferred to the air.
Answer: C