The Tabard Inn is the starting point for the pilgrims' journey to Canterbury. ... There is at least one more reason for having the pilgrims gather in the Tabard Inn, though: an inn could easily be a gathering place for people from diverse walks of life, accommodating commoners and more elite members of society.
C is the correct answer, because if a written assignment is a 'humorous report', it means that it can be subjective, and that the author's personality is noticeable in the text. Whereas that is not the case in the other options.