Hello I need help with these. I have answered them already but am not sure if they are correct, so if you could please help me out I really appreciate it! Thank you!

Adam Smith argued for the division of labor because he believed that

• nations benefit when dangerous or damaging manufacturing processes take place in other nations.

• workers who specialize in a task perform it more efficiently and can help identify ways to mechanize it. ----I think this is correct but not sure

• managers become more effective if they are responsible for overseeing just one team of workers.

• workers should only perform those tasks for which they are uniquely qualified or specially trained to do.

The main function of executive support systems (ESSs) is to

• document employee performance throughout a complex organization.

• rapidly create charts and graphs and other visuals for presentation.

• replace a series of older business intelligence systems.

• turn data into information to support high-level decision making. ----I think this is correct

A videoconference may be a better choice than a voice conference call because it allows

• increased use of technology.

• better communication through nonverbal cues. ----I think this is correct

• less travel time and expense.

• frequent contact among managers.

A marketing manager wants to determine which marketing campaign for a specific product was the most successful as determined by the amount of revenue generated. She uses the companys MKIS to determine how much revenue was generated for each of the three major campaigns run that year to determine revenue generated as compared to the cost of the campaign. This is an example of using an MKIS to

• evaluate the return on investment for each ad placement in a marketing.

• construct a marketing model.

• assist with cost-benefit analysis. ---I think this is correct

• evaluate competitive marketing campaigns.