Laws in some countries require bystanders to come to the aid of people in mortal danger. This legal obligation is called

Workers prefer layoffs to wage reductions during economic downturns because

A) layoffs benefit workers more than the firms. B) workers try to provide firms with incentives to report true economic conditions. C) firms will keep workers even during economic downturns to avoid more costs. D) there is symmetric information.

To maintain a monopoly, a firm must have

A) a perfectly inelastic demand. B) an insurmountable barrier to entry. C) marginal revenue equal to demand. D) few competitors.