Final answer:
Eleanor Roosevelt became the New Deal's unofficial ambassador in 1933. As the First Lady, she played a significant role in promoting and advocating for the New Deal programs.
Step-by-step explanation:
The woman who became the New Deal's unofficial ambassador in 1933 is Eleanor Roosevelt (a). As the First Lady, Eleanor Roosevelt played a significant role in promoting and advocating for the New Deal programs. She traveled across the country, meeting with Americans and listening to their concerns, and she used her platform to raise awareness of the importance of these programs in improving the lives of ordinary people.