The correct answer is C. A glass ceiling
Step-by-step explanation:
"Glass ceiling" is a concept used to represent social and cultural barriers that limit women and minorities, for example, ethnic minorities, to obtain high-level positions. This concept implies women do not have the same opportunities to grow professionally and even nowadays they are still limited by non-explicit barriers and obstacles men do not have. This term was first used during the 20th century to describe the position of women in works but it is now applied not only to women but minorities. Thus, the correct term that defines the barrier that stops skilled women to have high-level promotions is a glass ceiling.