The Narrator's <em /><em /><em /><em>Indecision
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Answer:
B) the relative deprivation principal.
Explanation:
Based on the information provided within the question it seems that Arthur's experience is best explained in terms of the relative deprivation principal. This principle basically explains the behaviors and actions of someone that believes that they deserve something that others possess. Which seems to be the case with Arthur, since he believes that he deserves a B or A solely because all his classmates got those grades.
The primary difficulty is the fact that we do not know all of the organisms that currently exist in the world along with those that existed in the past.