Final answer:
UPN and Fox were the television networks known for their popular black sitcoms during the golden age of black television in the 1990s and early 2000s. The correct option is (1).
Step-by-step explanation:
During the golden age of black television in the 1990s and the early 2000s, the television networks that built an audience with ethnic humor and became known for its popular black sitcoms were UPN and Fox.
These networks showcased a range of black sitcoms that were pivotal in bringing diverse storytelling and perspectives to mainstream audiences.
Their programming choices reflected the evolving social dynamics and contributed to the varied representation of African American life on television.