Answer: D. The King outlawed slavery in the colonies.
Explanation: The answer is correct because it is the only option that was not a grievance against the British crown listed in the question. The other three options (A, B, and C) all describe actions taken by the British government that were seen as oppressive or unfair by the colonies, and which contributed to the growing discontent and resentment towards British rule. Option D, on the other hand, describes an action that would have been seen as favorable by the colonies, as it would have abolished an institution that was deeply embedded in the economic and social fabric of the colonies. Therefore, option D is the only one that does not fit with the other options as a grievance against the British crown.