The correct answer to this question is that Emerson believes that a sentence can be grammatical in context but ungrammatical in isolation. Thank you for posting your question. I hope this answer helped you. Let me know if you need more help.
Answer: B. An emphasis on creativity rather than rules
Explanation:
The answer is A because an adjective is a word that describes something. When you answer "how many?", your answer is a number. A number is not descriptive.