____ takes place when members of an occupation insist that people earn certain credentials in order to enter the occupation:

A) Educational attainment
B) Professionalization
C) Meritocracy
D) Tracking
E) Stereotyping

Professionalization

The process of developing or elevating an occupation to a professional status, requiring specialized knowledge and often formal qualifications.

Credentials

Certifications or qualifications that prove a person's identity or qualifications in professional or academic fields.

Occupation

Pertains to an individual's regular activity or profession that they are trained for and perform for pay.