Which of the following groups is least vulnerable to air pollution?

The group that is considered least vulnerable to air pollution includes white-collar workers. Typically, white-collar workers engage in jobs that are more likely to be indoors and away from high exposure to outdoor air pollutants. Many of these jobs are performed in controlled environments, such as offices, where air quality can be managed through ventilation and filtration systems.

In contrast, children, blue-collar workers, and senior citizens are generally at higher risk from the effects of air pollution. Children are particularly susceptible because their lungs and respiratory systems are still developing. Blue-collar workers may be exposed to more outdoor pollutants, especially in industries such as construction or manufacturing. Senior citizens often have pre-existing health conditions, such as respiratory or cardiovascular issues, making them more vulnerable to the adverse effects of airborne toxins and particulate matter.

This context highlights the relative exposure levels and health impacts associated with different demographic groups concerning air pollution.