Which asthma risk factors are likely to increase due to climate change?

The choice identifying higher levels of air pollution as a risk factor likely to increase due to climate change is supported by several key factors. Climate change influences atmospheric conditions, leading to increased temperatures and altered weather patterns. These changes can exacerbate the formation of ground-level ozone and other pollutants, particularly in urban areas.

As temperatures rise, the chemical reactions that produce ground-level ozone become more efficient, resulting in higher concentrations of this pollutant. Additionally, extreme weather events associated with climate change, such as wildfires, can significantly contribute to poor air quality, releasing particulate matter and other harmful substances into the atmosphere.

Furthermore, changes in weather can increase the frequency and duration of events that elevate air pollution levels, particularly in certain regions. This escalating air pollution is especially concerning for individuals with asthma, as it can trigger symptoms and exacerbate the condition, leading to increased health risks.

In contrast, the other options suggest decreases or reductions in factors that would not align with current environmental trends influenced by climate change. Hence, the recognition of higher levels of air pollution as a rising risk factor aptly captures the implications of climate change on asthma prevalence and exacerbation.