IV. Choose the word (A, B, C or D) that best fits the blanks space in the following passage.

NOISE POLLUTION FROM KARAOKE

HCM City Department of Natural Resources and Environment has suggested allowing the use of mobile apps to measure ___(1)___ levels. The apps will help to promptly handle noise pollution in residential areas. The source of the noise is often shops selling audio devices, restaurants, portable speakers in public places, and especially those ___(2)___ sing karaoke at home. While home karaoke can be a joy to some, others consider it a nightmare because the singing can be deafening and last for hours, even until late at night. The chairman of the city People's Committee says that the ___(3)___ and control of noise violations is important to maintain security and ensure tranquility for residents. He directs the department to take responsibility and coordinate ___(4)___ the city’s Police Department to research and propose solutions to the problem. Solutions include a new law, enforcement of the law, education, and mass mobilization. The city will also fine heavily anyone who breaks the laws. If each person raises their sense of self-awareness and respect for others by ___(5)___ the noise they make, the quality of the living environment, the health and ___(6)___ of their work will be enhanced.