Urbanization refers to the increasing movement of people from rural areas to cities and towns, (18) ________ This phenomenon is driven by a quest for better job opportunities, improved healthcare, and access to education, among other factors. (19) ________, they become vibrant centers of economic activity, innovation, and cultural exchange. However, rapid urbanization also presents challenges. (20)_______, leading to overcrowded housing and transportation systems, and exacerbate environmental issues, like pollution and waste management. Moreover, (21) _______ can lead to social tensions. Governments and urban planners are tasked with finding sustainable solutions to these challenges, such as developing green spaces, improving public transportation, and ensuring affordable housing. Urbanization is not just a demographic shift (22) ________ that influences every aspect of society, from economic patterns to lifestyle changes. Balancing the benefits of urban growth with the need (23)________building resilient and livable cities for the future.

Mark the letter A, B, C, or D to indicate the correct option that best fits each of the numbered blanks from 18 to 23.