(b) She took part in the French Revolution.
Marianne was a female allegory symbolising France — representing national unity, appearing on coins and stamps, but she did not personally take part in the French Revolution.
Source: Chapter 1, Section 5 – Visualising the Nation
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The textbook clearly states Marianne was invented by artists in the nineteenth century to represent the French nation as an allegory of liberty and unity. She is a symbolic/artistic creation, not a real person who participated in the French Revolution. Options (a), (c), and (d) are all directly stated in the passage as true.