Diplomat: Though poppies can be turned into illegal and addictive drugs, we cannot expect farmers in Narobistan to stop growing poppies without providing these farmers, whose only concern is earning enough to support their families, with other options. To encourage the growing of soy plants that can be used to produce alternative fuels, we should agree to pay the farmers twice as much for an acre of soy plants as the farmers are paid for an acre of poppies.
Which of the following would most weaken the argument above?
A. In Narobistan, it is illegal to use drugs grown from poppies, but legal to grow the poppies. -> If it is legal to grow poppies then farmers may or may not grow as they are getting paid twice. It shall depend on their earnings. Incorrect.
B. The process by which soy plants are turned into alternative fuels will remain very expensive for at least another five years. -> May be but, twice price will be paid to farmers for product of soy plants. Farmers can still opt for soy production. Incorrect.
C. The farmers in Narobistan who grow plants that are used in perfumes make 2.5 times what poppy-growing farmers make each year. -> It is irrelevant, we are talking about Soy plants and Poppies plants.
D. The market for alternative fuels is less than one-thousandth of the market for illegal drugs. -> If market is less by 1 /1000, it means, higher priced (twice price of Poppies) soy production will be sold out for less units, and it leads to less absolute revenue and less absolute profit for farmers. It shall weaken the conclusion.
revenue = (No. of unit sold * selling Price per unit) and Profit = Revenue - Cost.
E. The cost of producing an acre of poppies is approximately one-half of the cost of producing an acre of soy plants.
New revenue of Soy = 200, revenue of Poppies = 100, if cost of soy production = 90 then cost of poppies production = 45; still profit due to Soy = (200 - 90) > profit due to poppies = (100 - 45)
So, I think D.