B
Below is a question with multiple-choice answers. Choose the correct option based on your reasoning.

### Question:
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?

### Choices:
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.

### Answer:
