B Is your answers to the question
Calorie
(Calorie most specifically means the amount of energy needed to raise one gram of water by one degree celsius.)
*But in the context of nutrition, we use calorie to describe how much energy a food contains and can transfer to the body. For example, a banana has about 105 calories. The average human adult needs about 1800-2000 calories per day depending on size and activity level.
Answer:
They probably used these pots to collect water and/or food. It is a good tool to help transport liquids and rice.