18) When a country abandons a no-trade policy, adopts a free-trade policy, and becomes
an importer of a particular good,
a.producer surplus increases and total surplus increases in the market for that good.
b.producer surplus increases and total surplus decreases in the market for that good.
c.producer surplus decreases and total surplus increases in the market for that good.
d.producer surplus decreases and total surplus decreases in the market for that good.
19) Abby bakes brownies and Liam grows flowers. In which of the following cases is it
impossible for both Abby and Liam to benefit from trade?
a.Abby does not like flowers and Liam does not like brownies.
b.Abby is better than Liam at baking brownies and Liam is better than Abby at growing
flowers.
c.Liam is better than Abby at baking brownies and at growing flowers.
d.Both Abby and Liam can benefit from trade in all of the above cases.