Which group is most at risk from lead exposure?

• A. Adults over 65.
• B. Pets.
• C. Plants.
• D. Children.

Answer: (D)

Children are the group most at risk because their bodies and brains are still developing, making them more vulnerable to lead’s toxic effects. They absorb a larger fraction of ingested lead than adults, and the developing nervous system is particularly sensitive to disruption from lead exposure. Everyday behaviors—hand-to-mouth activity, time spent on the floor, and exposure to dust and soil containing lead—increase their contact with lead. Even low levels can impair cognitive development, reduce IQ, and cause attention and learning problems. Common sources include lead-based paint in older homes, contaminated soil, and old plumbing. While adults and other groups can be affected, the combination of higher absorption, vulnerable development, and exposure patterns makes children the most at risk.