Which of the following are potentially valid arguments for tariffs or export subsidies, and which are not? Explain your answers.

a. “Dairy producers earning in Wales are at their lowest peak despite an overall rise in farm business incomes.”

b. “The more ecologically certified foods European Union requires, the higher the price of these products will be on common market.”

c. “US soybean exports to China and India don’t just mean increased wealth for farmers—they mean increased wealth for everyone in the value chain.”

d. “The PET industry continued to sustain U.S. recycling programs; this shows the strength of the PET recycling market in the face of significant global economic slowdown and a drop in virgin feedstock prices.”

e. “The price of coal has been stable, but the production dropped 10.3 percent, and workers have been forced to look for other jobs.”