I think they would say A difficult to accomplish.
It isn't D since this was about freeing slaves, and it isn't to lenient, since it was still very harsh.
It would be the economic policy of "mercantilism" that was based on the idea that the American colonies primarily were meant to provide economic benefits for Great Britain, since this philosophy held that trade between two entities benefits mainly the larger entity (in this case Britain), and that it is in that entity's best interest to protect its trading partner (the colonies).
