Select from:
- Too much water
- underground systems
- When the water is too cold
- Water spills
- Vapor turning into a liquid
- Warm air moving into cold air
- At the peak of a mountain
- To another location like underground

You are presented with the quiz "Where do beads of water come from?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "beads of water are formed by water vapor condensing" and "condensation is the change of water vapor to a liquid". So, what's the best answer to the question?
Answer:
Vapor turning into a liquid