_____ have the ability to recognize constraints and may choose to incur the costs of altering them

A straight-line demand curve with negative slope intersects the horizontal axis at 200 tons per week. The point on the demand curve at which the price elasticity of demand is 1 corresponds to a quantity demanded

A) of 0 tons. B) of 100 tons. C) of 200 tons. D) that would be negative if a negative quantity demanded were possible.

Microeconomics focuses on

A) the relationships among the different parts of the economy. B) the totals, or aggregates, of the economy. C) unemployment. D) business cycles.