If a goal of a nation's residents is to increase marginal productivity, they should increase

The percentage of single-parent poor mothers who are entitled to child support payments does not seem to vary based on marital status

Indicate whether the statement is true or false

Efficiency is reached by allocating resources to those who have the greatest willingness to pay for them. This can be achieved in a market where a negative externality is present by:

A. taxing consumers. B. giving consumers a subsidy. C. place a quota at the efficient level. D. All of these will achieve efficiency.