Answer:
(B) Prejudice
Explanation:
Prejudice is an unfavorable opinion formed about a person or group of people without adequate information and even before interacting with them.
It can stem from the person or group's gender, race, age or religious beliefs.
In this case, the behaviors of the cashiers and clerks are prejudiced based on the race of the shoppers.
Requesting African American and Latino shoppers show formal identification more than white shoppers do, indicates some form of distrust towards them.