Which of the following is a health risk associated with lead exposure?

Lead exposure is particularly hazardous due to its known impact on the neurological system. The correct answer highlights the significant risks lead poses to brain health, especially in children, who are more vulnerable. Chronic exposure to lead can lead to a range of neurological impairments, including decreased IQ, attention deficits, and behavioral problems. In adults, lead exposure can also contribute to cognitive decline and other neurological issues.

While cardiovascular disease, liver failure, and respiratory issues can be health concerns associated with various environmental toxins, they are not the primary effects linked specifically to lead exposure. Cardiovascular disease may have a broader set of risk factors and isn't a direct consequence of lead; similarly, liver failure and respiratory problems arise from different environmental or health-related exposures. Thus, neurological damage remains the primary and most significant health risk tied to lead exposure.