Which of the following scenarios reflects bias?
1 An employee of a cellular phone company explains to a customer why his company's service is superior.
2 A teacher explains how parallel syntax is written.
3 A newspaper reporter writes an article about the rising test scores among students in inner-city schools.
4 A doctor tells a patient that she needs to exercise more to improve her health.
5 A car salesman explains the features of a sports car to an an interested customer.