Which of these is NOT a city in Saudi Arabia?

Dubai is not a city in Saudi Arabia because it is actually located in the United Arab Emirates (UAE), not Saudi Arabia. While both countries are part of the Arabian Peninsula, Dubai is a separate city within the UAE known for its modern infrastructure, skyscrapers, and luxury lifestyle. Saudi Arabia, on the other hand, is a neighboring country to the UAE and has its own distinct cities such as Riyadh, Jeddah, and Mecca. Therefore, Dubai cannot be considered a city in Saudi Arabia.