Answer:
Option (D) is correct.
Explanation:
If the cost of producing organic produce decreasing because of technological changes then as a result there is an increase in the supply of organic produce. This will shift the supply curve of organic produce rightwards.
At the same time, if the taste and preferences of the U.S consumers changes towards the organic produce then as a result the demand for organic produce increases. This will shift the demand curve rightwards.
As a result of these shifts, there is an increase in the equilibrium quantity and the effect on equilibrium price is indeterminate because that will be dependent upon the size of the shifts of supply and demand curve.