The following are some of the reasons we preserve our food.
Not to lose it freshness
.To prevent contamination and infection
.To prevent food from smelling
.To keep insect and other pest away from the food.
Keeps farm produce in good condition for planting in the next season
.To keep food for a long period of time.
Synonyms for the word externality could be: face, area, level, side, skin, top, etc.
I’m pretty sure the correct answer is C
Color imagery helps the reader make connections with things in their everyday life and gives a stronger visualization.