In the context of sources of prejudice, when people view those who belong to their own groups more favorably than those who do not, they are involved in _________.

A) social learning
B) social facilitation
C) social categorization
D) social conflict

This describes social categorization, where people categorize others into groups and tend to favor their own group over others. Social learning refers to how people learn attitudes and behaviors through observation and imitation of others. Social facilitation refers to the tendency for people to perform better in the presence of others. Social conflict refers to the struggle for power and resources between groups.