Read the following job advertisement and mark the letter A, B, C, or D on your answer sheet to indicate the correct option that best fits each of the numbered blanks.

Urbanisation in Vietnam is rapidly transforming cities across the country. With increasing (5) _____ in urban areas, (6)__________people are moving from rural areas to cities. As a result, cities are becoming more crowded, leading to a lack (7) __________ affordable housing. However, to accommodate the growing population, cities are being upgraded with modern infrastructure such as high-rise buildings and improved healthcare facilities.(8) __________ these improvements, challenges remain, including the need for a reliable national grid and ensuring a living wage for urban workers. As Vietnam continues to urbanise, balancing economic growth with social welfare remains a key priority for sustainable development.