Question

the populati... want to monitor air quality to minimize... which three procedures should the city use for the air quality monitoring system? a. install sensors in a variety of locations around the city. b. compare collected data to long - term baseline levels of key pollutants. c. collect data systematically at the same times of day and from the same locations. d. collect data only during times that people are most likely to participate in outdoor activities. e. use sensors that start recording data when air pollutant concentrations rise above healthy le...

Explanation:

• Option A: Installing sensors in various city locations ensures comprehensive air quality data collection across different areas (e.g., industrial, residential), which is essential for accurate monitoring.
• Option B: Comparing collected data to long - term baseline levels of key pollutants helps in identifying trends, changes, and potential issues in air quality over time.
• Option C: Collecting data systematically at the same times of day and from the same locations provides consistent and comparable data, which is crucial for reliable air quality analysis.
• Option D: Collecting data only during outdoor activity times would give a biased view of air quality as it ignores other periods, so it's not a good procedure.
• Option E: Sensors that only record when pollutants are above healthy levels miss out on normal and low - level pollution data, which is important for a complete monitoring system.

Answer:

A. Install sensors in a variety of locations around the city.
B. Compare collected data to long - term baseline levels of key pollutants.
C. Collect data systematically at the same times of day and from the same locations.