cold milk warm soup water melting from ice steam rising from boiling water
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Students study how the temperature of a substance is related to the rate of molecular movement. The molecules in which substance are moving the fastest?
Possibilities:
- cold milk
- warm soup
- water melting from ice
- steam rising from boiling water

steam rising from boiling water