The correct option is "B. There were broad, tree-lined boulevards."
The First French Empire, commonly known as Napoleonic France, Napoleonic Empire or simply French Empire, was a sovereign state that included in territory a large part of western and central Europe; it also had numerous colonial domains known as France overseas and client states (satellites). It covers the entire period known as the Napoleonic Era, which covers the period from the coronation of his emperor, Napoleon I, to his abdication and exile on the island of Elba, in 1814. Officially, the term refers to the period between end of the consulate until the Bourbon Restoration, although later lived an epilogue between the period of the Hundred Days (March 1, 1815), the final abdication of Napoleon, on June 22, 1815, and the entry of Louis XVIII in Paris, this entailing the departure on July 7 of the Emperor Napoleon II and his Government Commission.