Overall discussions is sound. Sentence structures are sufficiently varied. May contain one or two serious grammatical errors. Minor errors still do not detract from the main points in the discussion. Less depth and insight than the A essay.
C Has a broader topic than the A or B essay and a reasonably clear thesis.
Spends more time than necessary on the background material or neglects to provide pertinent information for the audience to understand the discussion. Uses general, undeveloped remarks to support its thesis and so lacks specific, expanded examples. Leaves the reader asking question. Sentence structures are rarely varied. Contains a significant number of serious grammatical errors.