Final answer:
Steel became the product of choice for the construction of large buildings during this era.
Step-by-step explanation:
The product of choice for the construction of large buildings during this era was steel. The Industrial Revolution introduced steel as a new building material, which allowed for the construction of bold structural frames with clean lines and plain or shiny surfaces. Steel girders could bear the weight of tall buildings, leading to the development of skyscrapers. This marked a shift from the previous use of wood, brick, stone, and mud bricks for large structures.