Final answer:
The piece of textual evidence that best supports the claim is that the melting pot of America embraced her with open arms.
Step-by-step explanation:
The piece of textual evidence that best supports the claim that Anzia Yezierska has renewed hope for an American identity is option C: "The melting pot of America embraced her with open arms." This evidence suggests that Yezierska found acceptance and a sense of belonging in America, enabling her to have hope in gaining an American identity. The concept of the melting pot represents the idea that people from diverse backgrounds can come together and form a unified American identity.