Final answer:
Baron Haussmann rebuilt the city of Paris in the second half of the nineteenth century, transforming it into a modern city with wide boulevards and improved infrastructure.
Step-by-step explanation:
The city that was rebuilt by Baron Haussmann in the second half of the nineteenth century is Paris (option d).
Between 1853 and 1870, Napoleon III assigned Baron Haussmann to carry out an urban renewal project in Paris. The medieval city with narrow streets and open sewers was transformed into a modern city with wide boulevards, parks, and multi-class dwellings. Haussmann cleared the center of Paris, built wide boulevards, apartment buildings, and improved infrastructure like street lighting and sewage systems.
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