13 Read the following text about the Big Ben, the most iconic attraction London.Choose te correct option to complete the sentences. Big Ben Big Ben is the most famous clock in the world. It is never delayed because its structure and design *prevent/prevents* external influences. The clock was projected by Edmund Beckett Denison in 1851. Big Ben's name *refer/refers* to the giant bell inside the clock. The origins of its name are uncertain, but some theories *propose/proposes* that it *come/comes* as an honor to the boxer Benjamin Caunt, others *suggest/suggests* that it is a tribute to a Welsh civil engineer named Sir Benjamin Hall. The clock's bell *weight/weighs* 15.1 tons and it is located inside the Elizabeth Tower. The clock's tower *rise/rises about* 320 feet (97.5 meters).