Here's a problem to solve: Chris left a glass of water on a windowsill. When he looked at the glass a few days later, some of the water had evaporated. Which of the following best describes what happened to the particles of water that evaporated?

Among the 4 following options, which is the correct answer?

- A: They became larger in size.
 
- B: They spread out into the air.
 
- C: They were absorbed by the glass.
 
- D: They passed through the glass into the air.
 