Answer:
c,or the last option
Step-by-step explanation:
One of the major challenges that John Roebling faced when designing and building the Brooklyn Bridge was the unprecedented length of the suspension bridge. At the time of its construction, the Brooklyn Bridge was the longest suspension bridge ever built, spanning 1,595 feet (486 meters) between its two main towers. This presented numerous engineering and construction challenges, as the bridge needed to be able to withstand the weight of heavy traffic, including trains and horse-drawn carriages, as well as the forces of wind and weather. Additionally, the construction of the bridge had to be done in a way that would not disrupt the busy waterway beneath it. Roebling overcame these challenges by developing innovative construction techniques, such as using pneumatic caissons to lay the foundation of the bridge and using steel wire cables to support the bridge's weight. However, Roebling's work on the bridge was cut short by a tragic accident in which he suffered a debilitating injury that eventually led to his death. His son, Washington Roebling, took over as chief engineer and successfully completed the bridge in 1883.