Read the following passage and choose the letter A, B, C, or D to indicate the correct answer to each of the questions.

 London, the capital city of England and the United Kingdom, is situated on the River Thames, which meanders through the city. It is renowned for its numerous bridges. Among the bridges, the oldest one is London Bridge, which was originally built of wood but reconstructed in stone in 1217. However, the most unique bridge is Tower Bridge, which was designed to blend in with the nearby Tower of London.

London is a thriving commercial and cultural centre with many significant financial organisations such as the Bank of England and the London Stock Exchange. They are located in the area called the City. Docklands, the former port in east London, has been redeveloped as a business centre. The West End boasts theatres, cinemas, museums, and stores. Due to the high cost of housing near the city centre, many people working in London prefer to live in the suburbs and commute to work by train or bus. London's transportation system is well-connected, with various modes of transportation available, including the red London buses, black taxi cabs, and the London Underground, commonly known as 'the Tube'.

London is now a cosmopolitan, multicultural city which has attracted people from around the globe. Although some people from other parts of Britain view it as very noisy and dirty, many others visit London only for the 'bright lights' - the theatres round Shaftesbury Avenue or the shops of Oxford Street. People also take their children to visit Buckingham Palace, where the royal family lives, and the clock tower, from which Big Ben tolls the hour. Young people, on the other hand, are lured to the pubs and comedy clubs of Covent Garden, live music concerts, and the stalls of Camden market.

What was designed to blend in with the nearby Tower of London?