An air quality index (AQI) is a way to combine measurements of multiple air pollutants into a single number or rating. This index is ideally kept constantly updated and available in different places. The AQI is most useful when lots of pollution data are being gathered and when pollution levels are normally, but not always, low. In such cases, if pollution levels spike for a few days, the public can quickly take preventive action (like staying indoors) in response to an air quality warning. Unfortunately, that is not urban India. Pollution levels in many large Indian cities are so high that they remain well above any health or regulatory standard for large part of the year. If our index stays in the 'Red/Dangerous' region day after day, there is not much any one can do, other than getting used to ignoring it.

Which among the following is the most logical and rational inference that can be made from the above passage?

Question

An air quality index (AQI) is a way to combine measurements of multiple air pollutants into a single number or rating. This index is ideally kept constantly updated and available in different places. The AQI is most useful when lots of pollution data are being gathered and when pollution levels are normally, but not always, low. In such cases, if pollution levels spike for a few days, the public can quickly take preventive action (like staying indoors) in response to an air quality warning. Unfortunately, that is not urban India. Pollution levels in many large Indian cities are so high that they remain well above any health or regulatory standard for large part of the year. If our index stays in the 'Red/Dangerous' region day after day, there is not much any one can do, other than getting used to ignoring it.

Which among the following is the most logical and rational inference that can be made from the above passage?

Accepted Answer

Correct Option: Air quality index is not helpful to the residents of many of our large cities. The passage outlines that an Air Quality Index (AQI) is most effective when pollution levels are normally low, allowing the public to take quick preventive actions during temporary spikes. However, in major Indian cities, pollution levels are consistently high and remain well above regulatory and safety standards throughout most of the year. When the index remains constantly in the 'Red/Dangerous' zone day after day, it becomes ineffective because residents have no practical recourse other than to get used to ignoring it. This leads directly to the logical inference that the AQI is not helpful to the residents of many of our large cities, as it fails to serve its primary purpose of warning about anomalous spikes. Therefore, Option C is the most rational and direct inference from the text.

Which among the following is the most logical and rational inference that can be made from the above passage?

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