The correct options are
B Establishing no-honking zones
C Minimising usage of electronic devices
D Planting trees
Horns from trucks, buses, and cars produce a considerable degree of noise pollution. Therefore, no horn zone can be useful in hospitals, schools, and residential areas. Most of the gaming systems, computers and televisions can contribute to noise pollution when on high volumes. One solution to this problem is to turn them off the devices when not in use and also keep them on a moderate volume to reduce noise pollution. Planting trees also helps. Trees are known to absorb a certain amount of sound decibels and maintain a peaceful environment in an urban setting.