What Does It Mean to Say That "Adults Encounter a Gendered

What does it mean to say that "adults encounter a gendered work world"?

A) Individuals must be clearly defined as either a male or female before they are able to be hired.
B) Women are not capable of performing the same tasks that men perform.
C) Work environments enforce strict rules and regulations that reinforce traditional roles for women and men.
D) Many workplaces are predominantly one gender or completely the other gender.
E) None of the above