Mark the letter A, B, C, or D to indicate the best arrangement of utterances or sentences to make a meaningful exchange or text in each of the following questions from 13 to 17.

Question 13.
a. The line graph illustrates how elderly people in the United States spent their free time from 1980 to 2010.
b. The percentage of elderly people who enjoyed hiking increased significantly from 20% in the 1980s to 80% in the 2010s, becoming the most popular activity in the end.
c. Watching TV also remained high throughout the period, rising from 60% to 70% before falling slightly to 65% in the 2010s.
d. In contrast, reading and surfing the Internet experienced noticeable growth in the final decade, while the figure for theatre changed moderately over time.
e. Overall, watching TV and hiking were the most popular activities during the period, while surfing the Internet was the least common activity at the beginning.

Question 15. a. At first, it was difficult to resist checking my phone for messages or social media updates.
b. However, without digital distractions, I spent more time reading books, going for walks, and connecting with people in person.
c. In conclusion, a digital detox can help refresh the mind and improve overall focus on real-life activities.
d. A few weeks ago, I took a digital detox by completely avoiding screens for a full day.
e. By the end of the day, I felt more relaxed and grounded.

Question 18. a. Many cities have focused on community-based policing, which has helped build trust between law enforcement and residents, leading to better cooperation and a reduction in criminal activities.
b. While challenges remain, these policies have certainly contributed to a noticeable drop in crime rates, fostering safer communities.
c. Moreover, the use of technology in policing, including surveillance cameras and data analytics, has enabled more efficient crime detection and prevention.
d. Additionally, there has been an increase in preventive measures, such as improved education and social services, which address the root causes of crime.
e. The recent decline in crime rates can be largely attributed to the implementation of effective policies.

a. Early data from the first quarter revealed a fifteen percent reduction in peak-hour delays and noticeably cleaner air across central wards.
b. Motorists entering the central zone had to pay a fee, with the generated revenue allocated for cycle lanes and bus routes.
c. Years of unchecked expansion of private vehicle ownership had rendered the commute in Stoneville the slowest in the region.
d. The encouraging outcomes suggested that the scheme would be expanded to other districts.
e. The city authorities implemented a simple yet controversial intervention: charging a congestion fee.

a. The convenience, however, carries inherent risks because every connected device is a potential entry point for hackers to steal sensitive data.
b. Smart homes have become essential features of modern life, transforming how individuals manage their domestic environments efficiently.
c. The integrated systems offer convenience, such as turning off the oven from afar or locking doors with a single smartphone tap.
d. Anyone investing in smart hardware should carefully weigh the appeal of automation against the time and care required to keep a home network secure.
e. A poorly updated router or a default password left unchanged has, in several recent reported cases, allowed strangers to listen in on private family conversations.

Question 15.
a. Moreover, educating residents about responsible waste disposal practices helps cultivate environmental awareness and encourages active civic participation in the city's sustainability initiatives.
b. Effective waste sorting plays a pivotal role in sustainable urban management in Ho Chi Minh City, as it directly contributes to improved recycling efficiency and a significant reduction in landfill dependency.
c. For example, materials such as plastic, paper, and glass should be separated from food waste, as they can be recycled and reintegrated into production cycles when properly collected.
d. In conclusion, by promoting systematic waste sorting across Ho Chi Minh City, local authorities and communities can work together to create a cleaner urban environment while maximizing resource reuse and minimizing ecological strain.
e. A crucial component of this process involves raising public awareness of waste classification, including recyclable materials, organic waste, and residual household refuse, each of which requires distinct handling methods.

Question 17.
a. This transformation also included the development of new industrial areas, as farmland nearby was converted into factories and small production sites.
b. Overall, these changes highlight the modernisation of Lakeview, turning it from a peaceful residential district into a more dynamic and commercially active area.
c. Between 2010 and 2022, the outer areas of Lakeview city experienced significant changes, reflecting a shift towards urban growth and economic development.
d. Housing areas were greatly affected, with many old houses being replaced by modern buildings, and a local park being relocated.
e. At the same time, commercial facilities expanded rapidly, especially with the construction of a large mall and a parking lot on former residential land.