Answer ALL questions. (1) Production and trade in the economy is dependent upon transportation. Discuss the statement above. (4 marks) (2) Describe the challenges faced by each of the transportation modes below in the current environment context. a. Air transportation b. Ocean transportation (6 marks) (3) Two transportation economists are appearing on a television program and are being questioned on the issue of increased taxes on gasoline and their effect on pollution emissions. a. Economist A: increase in tax would make driving more expansive and thus increase carpooling and decrease leisurely Sunday drives. Thus, pollution would decline. b. Economist B: Tax will make driving more expansive; government would take tax revenue and improve the quality existing roads and even build new one. More and better roads mean more driving and the effect on emission and pollution could go either way, Which economist is correct? Discuss and elaborate your point. (10 marks)