Answer:
d. The excavations of ancient Pompeii and Herculaneum
Explanation:
The excavations of ancient Pompeii and Herculaneum helped shape the Neoclassical style.
Neoclassical architecture was modeled after the classical style and, as with other art forms, was in many ways a reaction against the exuberant Rococo style(opposition to the overly decorative and gaudy styles of Rococo and Baroque that were infusing society with a vanity art culture based on personal conceits and whimsy. This style is  characterized by grandeur of scale, simplicity of geometric forms, dramatic use of columns, and a preference for blank walls. The discovery of Old city of Pompeii and Herculaneum helped to shape the neoclassical style of architecture.
Herculaneum was discovered in 1709, and systematic excavation began there in 1738 after it was rediscovered by workmen digging for the foundations of a summer palace for the King of Naples.
