Which of the following was Isambard Kingdom Brunel's primary area of expertise?

Isambard Kingdom Brunel was one of the most ingenious and prolific figures of the Industrial Revolution, a period of massive technological advancement in Britain. While he was involved in many different kinds of engineering projects, including ships and railway tunnels, he's most celebrated for his groundbreaking bridge designs. Think of the Clifton Suspension Bridge in Bristol, a stunning example of Victorian engineering that still stands today. He also designed the Royal Albert Bridge in Saltash, Cornwall. These bridges weren't just functional; they were architectural marvels that pushed the boundaries of what was thought possible at the time. While motor cars, aeroplanes, and skyscrapers are all impressive feats of engineering, they came about much later than Brunel's time. He died in 1859, well before the invention of the motor car or the construction of the first skyscraper. So, while he was a versatile engineer, bridges were his primary and most iconic area of expertise.