When workers are paid on a piece-rate basis, an employer must be able to easily measure each worker's output

During World War II, the increasing productivity of workers who built ships was due primarily to

A) human capital accumulation through schooling and training. B) human capital accumulation by repeatedly doing the same tasks. C) discoveries of new and better technologies. D) investments by shipyards in new capital equipment.

The above figure shows the demand and cost curves for a firm in monopolistic competition. In the long run, the demand for this firm's product will

A) decrease as other firms enter the industry. B) decrease as product differences disappear. C) become less elastic as firms exit the industry. D) become less elastic as other firms enter the industry.