Concepts used in questions are clearly understood. Answers have clear but not overlong introduction. Answers provide evidence of wide range of reading. Material included is relevant for development of answer. There is no repetition of material.
Answer is concise.
Assertions are justified, counter arguments are examined. Clear line of argument is developed. Answers end with summary of key points. Conclusion to answer ties in with question set. Presentation Spelling, syntax and punctuation are accurate.