Which of the following is an example of a business using a database to retrieve and display information?
a.
the flight attendant directs you to view the safety information on the overhead tv screen.
b.
the checker at the grocery store scans your item and the price appears on the screen.
c.
the monitor on the exercise bike at the gym automatically displays your heart rate.
d.
the real estate agent displays a multimedia slideshow of homes for sale.