Goods that can be produced at a constant or very gently rising opportunity cost have

After trade opens, the short run impact on the income of the variable factor will be

A) a decrease. B) an increase. C) zero. D) indeterminate, depending on the consumption pattern of the owners of the variable factor.

On average, people in low-income countries ________ than people in high-income countries

A) have a longer life expectancy B) are subject to a lower infant mortality rate C) are shorter D) are exposed to fewer severe diseases