I am making a educated guess and saying producers. Plants mostly.
I think the answer is C. They are trying to emotionally avoid the exam by distracting themselves
Hope this helps :)
The answer would most likely be sodium because carbon is a plants food, phosphorus is a nutrient in soil, hydrogen is air, but sodium does not have a place in a plant:)
D.
Since she's not driving her car, there is no carbon emissions emitting from her car. Thus, there will be less carbon dioxide in the atmosphere in comparison if she were to drive her car. Good luck!