The Downward- Sloping Line in the Diagram Below Shows the Combinations

Multiple Choice

The downward- sloping line in the diagram below shows the combinations of health care and education expenditures that the government can afford with a given amount of tax revenue.
FIGURE 1- 6
-Behaviour in free- market economies is

A) based primarily on custom and habit.
B) determined by a central authority.
C) random and unpredictable.
D) mostly affected by elements of tradition and government command.
E) mostly directed by self interest.