a) Classify each of the following as a movement along or a shift of the production function and provide a justification for your choice.
(i) Grace Kennedy invests $125 million in a new manufacturing plant.
(ii) A new highway linking two major towns is constructed.
(iii) A new fertilizer formula improves crop yields.
(iv) An earthquake.
(v) Illegal drug traffickers start to bribe judges and corrupt the justice system.