The tone of the writing enhances the purpose of the paper. Needless to say, there are no typos, misspellings, or grammatical errors. B - A B paper is also free of mechanical errors and stilted syntax. The writing is concise, precise and logically ordered. The points of the paper are well developed and unified around a clear organizing principle, apparent early in the paper.
Transitions are smooth and the paper is easy to read.
C - The C paper meets the requirements of the assignment, answers all the relevant questions, and has few mechanical errors. The content may be thin, however, and the argument sometimes difficult to follow. There may be generalities that frustrate the reader. Verb tenses may not agree, sentences are choppy, and often there is repetition. The C paper has lack of effort written all over it, even while it basically completes the assignment.