Construction of the Burj Khalifa began in 2004 and completed five years later in ________?

C. 2009

The Burj Khalifa is a skyscraper located in Dubai, United Arab Emirates. It is the tallest building in the world, with a height of 828 meters (2,716 feet). Construction of the Burj Khalifa began in 2004 and was completed in 2009, taking a total of five years to build. The building has 163 floors and is primarily used for commercial and residential purposes. It is a popular tourist attraction, with an observation deck on the 124th floor that offers stunning views of Dubai and the surrounding area. The Burj Khalifa has won numerous awards for its architecture and engineering and is considered a modern engineering marvel.