Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the option that best fits each of the numbered blanks from 18 to 22.

The Future of Urban Living
Urbanization, with cities becoming hubs of innovation, culture, and economic activity, (18) _______. As cities grow, they face challenges such as overcrowding, pollution, and resource scarcity. However, technological advancements and sustainable design principles offer promising solutions for the future of urban living.
Equipped with advanced technologies, (19) _______. By utilizing sensors, data analytics, and artificial intelligence, cities can improve traffic flow, energy efficiency, and public safety. For instance, smart grids can manage energy consumption more effectively, while intelligent transportation systems can reduce congestion and emissions. (20) _______.
Furthermore, the sustainable urban planning principles, (21) _______, are essential for creating livable cities. Green roofs, vertical gardens, and urban farms can help mitigate the urban heat island effect and improve air quality. Additionally, investing in renewable energy sources and sustainable building materials can reduce the environmental impact of urban development.
(22) _______. By embracing technology, sustainable design, and community-oriented approaches, cities can become more livable, resilient, and equitable places for future generations.