The student demonstrated a precise understanding of the methods chosen for primary and secondary data collection, including stratified sampling and air quality and decibel measurements. They also selected suitable techniques, such as surveys and measurements, for collecting quality data. Although they stated the location and time of the investigation, they did not provide the date and exact hour, which is important for investigations of this nature. The student included necessary figures such as photos, maps, and worksheets to explain the investigation methods, although it would have been better if they had included them in this section of the IA.
