31.Which statement most accurately represents the relationship between wildfire smoke exposure and neurological conditions based on the research presented? (A) Neurological impacts occur only after sustained exposure over multiple fire seasons. (B) The blood-brain barrier provides effective protection against most wildfire pollutants. (C) The neurological effects are primarily mediated through respiratory impairment. (D) The PM2.5 from wildfires presents a unique risk profile compared to general air pollution.