The place that is still part of France and remains under French jurisdiction is C. La Guyane française (French Guiana).
What area is this
French Guiana, known as "La Guyane française" in French, is an overseas department and region of France located on the northeastern coast of South America. It is an integral part of France, making it subject to French jurisdiction and governance.
As an overseas department, French Guiana is considered an integral part of the French Republic. It functions similarly to other departments within mainland France, following French laws, using the Euro as its currency, and being represented in the French National Assembly and Senate.