Concept:A rightward shift of the supply curve means producers supply more at every price, usually due to reduced production costs.
Explanation:Higher taxes on inputs increase production cost and shift the supply curve left, not right.
Rural-urban migration reduces local labour, so local supply falls and the curve shifts left.
A change in the price of the commodity causes a movement along the same curve, not a shift.
But when government increases subsidies, production cost falls.
Producers become willing to supply more locally-produced goods at each price level.
Hence, the supply curve shifts to the right.
Answer:B. government increases subsidies.