The answer is D i think this because the supply and demand means that if there is more demand for something they will need to supply it more which would mean the opium farming would go up!
According to the relative motion of the plates, the relative motion between the Pacific and the North American plates may be formed by the external stretching of the basin and range provinces that leaves the north and the south orientation of the mountain ranges that are separated by the down-dropped sediments filed basin.