Consider the table given below providing details of traffic volume per hour for locations: | Location | Total

Question

Consider the table given below providing details of traffic volume per hour for locations: | Location | Total traffic volume | % of Heavy Vehicles | Average noise level in dB (A) | Noise pollution level, in dB (A) | | :--- | :--- | :--- | :--- | :--- | | I | 377 | 24.4 | 73.5 | 84 | | II | 380 | 12.5 | 72.6 | 83 | | III | 377 | 30.0 | 73.5 | 86.5 | | IV | 225 | 12.5 | 72.98 | 80.9 | When the total traffic volume is the same, the factor(s) which affect(s) the noise pollution level is/are [Location | Total traffic volume | % of Heavy Vehicles | Average noise level in dB (A) | Noise pollution level, in (A) ; I | 377 | 24.4 | 73.5 | 84 ; II | 380 | 12.5 | 72.6 | 83 ; III | 377 | 30.0 | 73.5 | 86.5 ; IV | 225 | 12.5 | 72.98 | 80.9]

Accepted Answer

To solve this question, we must look specifically at the locations where the total traffic volume is the same, as requested by the prompt.

Comparing Location I and Location III, both have an identical total traffic volume of 377. Despite having the same average noise level of 73.5, the final Noise Pollution Level is higher in Location III (86.5) than in Location I (84).

The only variable that changes between these two locations is the percentage of heavy vehicles. Location III has 30 percent heavy vehicles, while Location I has 24.4 percent. This demonstrates that when traffic volume is constant, the percentage of heavy vehicles is the factor that directly affects and increases the noise pollution level. Therefore, option A is the correct answer.

Answer

% of heavy vehicles

Answer

noise pollution level and average noise level

Answer

average noise level and % of heavy vehicles

Answer

indeterminable on the basis of details given

Explanation

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