Which best describes Carrie Chapman Catt’s “Winning Plan” to achieve national women's suffrage?

Carrie Chapman Catt’s “Winning Plan” used both state and federal strategies. Supporters worked to win suffrage in as many states as possible while also pressuring Congress to pass a constitutional amendment. That describes choice C; the plan did not rely exclusively on either state campaigns or a federal amendment.

AI-written and checked against the verified answer.