Sarah has been with an organization for $10$ years and is considered a highly knowledgeable employee who is a valuable asset to the organization. However, every time she tries to apply for a promotion for which she is well qualified, she has been declined. She's noticed that other women in her organization appear to be having similar experiences but that her male coworkers don't seem to have any problems getting promoted. The barrier Sarah and her female coworkers appear to be experiencing is commonly called the $\_\_\_\_\_\_.$

Question $20$ options:

glass ceiling

glass wall

glass elevator

glass cliff