Final answer:
A critique of relying on credentials as proof of qualification serves as a gatekeeping function to exclude certain individuals for a position.
Step-by-step explanation:
A critique of relying on credentials - diplomas or certificates - as proof that someone is qualified for a position is that it serves a gatekeeping function to keep out people seen as not desirable for the position. This is true. Credentialism, which emphasizes certificates or degrees to show a person's skill, education level, or job qualifications, can create barriers and limit opportunities for those who may have the necessary skills but lack formal credentials. For example, an employer may require a college degree for a job, even though the skills required for that job may not necessarily be acquired through formal education.