Answer:
B). The fences that exist between people are both physical and social.
Step-by-step explanation:
'Fences' written by August Wilson discusses the aspects of black life and highlights the pressures of society on African Americans. The 'fence' is a mark or symbol of segregation of the black community from white domination. It also functions symbolically, both physically and mentally to signify protection from the outer white-dominated world. It displays how blacks are subjugated by the racist system of white power.
Thus, the possible theme could be 'the fences that exist between people are both physical as well as social' as they are physically oppressed through the works like garbage collectors while the social division is reflected by their idea of protecting themselves inside the fences(revealing their inability to face the brutal reality of pain and discrimination). Therefore, option B is the correct answer.