Final answer:
The Nigerian writer known for her novels "Purple Hibiscus," "Half of a Yellow Sun," and "Americanah" is Chimamanda Ngozi Adichie.
Step-by-step explanation:
The Nigerian writer known for her highly acclaimed novels Purple Hibiscus (2003), Half of a Yellow Sun (2006), and Americanah (2013) is Chimamanda Ngozi Adichie. Chimamanda Ngozi Adichie grew up in Nigeria and has established herself as a significant voice in contemporary literature. Her works are celebrated for their insightful portrayal of Nigerian culture and history, as well as themes of identity, feminism, and race. Americanah in particular, won the National Book Critics Circle Award and was listed as one of The New York Times Top Ten Best Books of 2013. Additionally, her TED Talk, The Danger of A Single Story, has become one of the most-viewed TED Talks of all time, reflecting the global impact of her storytelling and thought leadership.