Rural-urban migrants differ from the rest of the rural population in that they are more likely to be

The marginal cost of labor, MCL, is defined as the

A) total cost of producing a certain amount of output. B) total cost of hiring an additional worker. C) additional cost of hiring an additional worker. D) additional fixed cost of producing an additional unit of output.

A perfectly elastic supply curve is

A) an upward sloping straight line that intersects the origin. B) horizontal. C) vertical. D) downward sloping.