Question

Which is correct?
A. When asked to name a great American writer, I said Toni Morrison. Who wrote Beloved and won a Nobel Prize for literature.
B. When asked to name a great American writer, I said Toni Morrison who wrote Beloved and won a Nobel Prize for literature.
C. When asked to name a great American writer, I said Toni Morrison, who wrote Beloved and won a Nobel Prize for literature.

Answer 1

C. Is the correct answer

Answer 2

The most correct sentence of them all is going to be sentence C. or the last option.

Its use of commas is completely correct, while the choice of language could be more professional.

Hope this helps!