Final answer:
The manager's hiring practice represents discrimination based on gender and the glass ceiling phenomenon. This discrimination is rooted in social patterns of discrimination that limit women's advancement to leadership positions.
Step-by-step explanation:
The manager at the local hamburger drive-in not hiring men because he believed that women were smarter and worked harder represents discrimination based on gender.
This discrimination is an example of the glass ceiling, which is an invisible barrier that prevents women from reaching the highest levels of an organization.
This issue is rooted in social patterns of discrimination, including gender roles and stereotypes that limit women's advancement to leadership positions.