Final answer:
Lavender oil vapor and water vapor both undergo a change in physical state as they cool, transitioning from a gas to a liquid through the process of condensation.
Step-by-step explanation:
When lavender oil vapor and water vapor cool, they both undergo a change in physical state.
Lavender oil vapor will change from a gas state to a liquid state as it cools. This process is called condensation.
Water vapor will change from a gas state to a liquid state as it cools. This process is also called condensation.