the mass the volume the temperature the state of matter
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: A beaker containing 50 milliliters of ice is placed on a windowsill. After several hours, the ice melts. What property of the ice did not change when it melted?
Possibilities:
- the mass
- the volume
- the temperature
- the state of matter

the mass