Which of the following defines the tendency for women to be clustered at the bottom of the hierarchy within occupations?

A) the glass ceiling
B) vertical segregation
C) the two-person career
D) horizontal segregation

Vertical segregation refers to the tendency for women to be concentrated at the lower levels of a job hierarchy, while men tend to hold the higher-level positions. The glass ceiling refers to the invisible barriers that prevent women from advancing to senior leadership positions. The two-person career refers to the career paths of couples where one person sacrifices their career advancement for the other's career. Horizontal segregation refers to the concentration of women in a particular occupation or industry, often due to gender stereotypes and societal expectations.