Comparative advantage is A) the ability to perform an activity ...

[Engineer]

Comparative advantage is
 
  A) the ability to perform an activity at a lower opportunity cost than anyone else.
  B) the ability to perform an activity at a higher opportunity cost than anyone else.
  C) the ability to perform an activity at a zero opportunity cost.
  D) another name for absolute advantage.

Question 2

The cost of producing an additional unit of a good or service that falls on people other than the producer of that good or service is the
 
  A) marginal external cost.
  B) marginal private cost.
  C) marginal social cost.
  D) None of the above answers is correct.

[jasonq]

Answer to Question 1

A

Answer to Question 2

A