Respuesta :
The boiling and freezing point of water. You know this because at 0degrees water freezes and at 100 degrees water boils
Answer:
A. the boiling and freezing point of water
Explanation:
The Celsius Temperature scale is based on the boiling and freezing point of water.
0° Celsius is know as freezing point of water and 100° C is known as the boiling point of boiling point of water. It was developed by a Swedish scientist named Anders Celsius. It is also sometimes called Centigrade scale.