The appropriate response is the National Organization for Women. It is the biggest association of women's activist grassroots activists in the United States. Presently has several sections and countless individuals and activists in every one of the 50 states and the District of Columbia.
C. possibly don't take my word
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The correct answer should be glass walls.
As opposed to glass ceiling, where no advancement above a certain level is allowed whatsoever, when it comes to glass walls, women and minorities can advance, but only within their own small department. However, they cannot reach any higher leadership positions.
The best and most correct answer is C. Most are lawyers -Gradpoint