A client is experiencing sleep disturbances and desires to decrease caffeine intake. Which of the following beverages should the nurse recommend?

The nurse should recommend brewed iced tea as it generally contains less caffeine compared to other choices. Lemon-lime soda, diet cola, and chocolate milk all contain caffeine, which can contribute to sleep disturbances. Lemon-lime soda and diet cola are carbonated beverages that typically contain caffeine unless specified as caffeine-free. Chocolate milk also contains caffeine due to the cocoa content. Therefore, brewed iced tea is the most suitable choice to reduce caffeine intake and improve sleep quality.