If the four-firm concentration ratio for industry X is 70: Group of answer choices the industry is oligopoly. the industry is monopolistically competitive. the four largest firms account for 20 percent of total sales. each of the four largest firms accounts for 20 percent of total sales.

Over the past year, three of the star salesmen at family resorts international's corporate office have been lured away to competitors. on top of that, karina, the general manager of the sales department, has noticed that most employees come in, do their jobs, and leave. family resorts offers a good salary, benefits, and tuition reimbursement, as well as a number of development and training programs. most employees seem contented enough, but karina would like to do something to increase the level of engagement among her staff. what do you think karina should do?