Answer:
i think number 4. i searched it and it was 19.4 so 19.4 is closest to 20.
A.it's true. Lack of water can also give u a heatstroke during hot weather
According to the United States Department of Agriculture, the best temperature for short-term refrigeration storage is : 40° or below
This temperature usually protect the food without damaging it's structure for a long -term period.
hope this helps