Explanations:Air pollution is a significant environmental issue in urban areas, particularly in cities like Delhi, where high levels of particulate matter and other pollutants can pose serious health risks. To mitigate the effects of air pollution, several measures can be taken to protect oneself from exposure. These measures include keeping windows closed, running an air purifier, and wearing a mask when outdoors.
Keeping windows closed is an effective way to prevent outdoor air pollution from entering the indoor environment. This is particularly important during periods of high pollution, as it helps to maintain a cleaner indoor air quality. By sealing off the indoor space from the outdoor environment, the concentration of pollutants inside the home or office can be significantly reduced.
Running an air purifier is another important measure to protect from air pollution. Air purifiers are designed to filter out particulate matter, allergens, and other pollutants from the air. They work by drawing in air and passing it through a series of filters that trap these harmful particles. This process helps to improve the overall air quality indoors, providing a safer and healthier environment for individuals to breathe.
Wearing a mask when outdoors is also crucial in protecting oneself from air pollution. Masks, particularly those designed to filter out particulate matter, can significantly reduce the amount of pollutants that are inhaled. This is especially important for individuals who are more vulnerable to the effects of air pollution, such as the elderly, children, and those with respiratory conditions.
Each of these measures addresses different aspects of air pollution exposure, both indoors and outdoors. By combining these strategies, individuals can effectively reduce their exposure to air pollution and protect their health. Therefore, the correct answer is that all of the above measures are effective in protecting from air pollution in Delhi.