Answer:a. To modernize and improve sanitation and infrastructure in the city
Explanation:
Baron Georges Haussmann was a French urban planner who oversaw the reconstruction of Paris in the mid-19th century. His goal was to modernize and improve the city's sanitation and infrastructure. He widened streets, built new sewers, and created new parks and green spaces. He also demolished many of the city's old buildings and replaced them with new, more modern structures.
Therefore, the answer is a. To modernize and improve sanitation and infrastructure in the city.