Answer:
a. discrimination.
Explanation:
Discrimination: In social psychology, the term discrimination is defined as the actions or behavior of an individual towards a member of other groups or individuals based on race, gender, religion, sex, class, etc. These actions or behavior generally are considered as negative and harsh. Discrimination only involves behavior rather than involving attitude as in prejudice.
Types of discrimination :
1. Racial discrimination.
2. Gender discrimination.
3. Age discrimination, etc.
In the question above, Michelle's unwillingness behavior to admit Carmen into the program is the result of racial discrimination.