The answer to this question is D: Psychoactive. It is the world's most widely consumed psychoactive drug.
To compute inpiratory reserve volume (irv), one would need to know and it is: IRV = VC - (TV+ERV)
Inspiratory reserve volume is the maximal amount or more air that can be drawn into the lungs by determine effort after normal inspiration - assimilate expiratory reserve volume.
Food webs are more complex than food chain
They would have to experiment on the different types of plants and put them in different environments to test there's physical features but before that they have to make an hypothesis of what would happen and analyze