Today we're going to discuss the history of the bicycle. The first verifiable bicycle, called the 'Draisine', was invented by Karl von Drais in 1817. It had no pedals; riders pushed their feet against the ground to move. In the 1860s, pedals were added to the front wheel, creating the 'velocipede'. However, this design was nicknamed the 'boneshaker' due to its uncomfortable ride on cobblestone streets. Later, in the 1880s, the 'safety bicycle' with a chain drive and two equal-sized wheels became popular. This design greatly improved stability and safety, leading to a cycling boom in the 1890s, especially among women who gained more mobility.
❓ What was the main problem with the velocipede, according to the lecture?
A. A. It had no pedals and was difficult to move.
B. B. It was very uncomfortable on rough roads.
C. C. It was too expensive for most people.
D. D. It had two wheels of unequal size, causing instability.