How can lead enter a child's body?

Lead can enter a child's body primarily through ingestion, making the option of eating contaminated food or substances the correct choice. Children are particularly vulnerable to lead exposure because they often put their hands and objects in their mouths, and if those hands or objects are contaminated with lead dust or paint chips, ingestion occurs.

Contaminated food or substances can come from various sources, such as lead-based paint dust, soil, or even toys that might contain lead. This type of exposure is especially concerning for young children, as lead can accumulate in their bodies, leading to severe health issues affecting cognitive development and overall well-being.

While skin contact with lead-painted surfaces can pose a risk, the primary pathway for lead to enter the bloodstream is through ingestion rather than absorption through the skin. Engaging in physical activities in lead-contaminated areas is a risk factor for exposure but does not directly convey how lead enters the body compared to ingestion. Sunlight does not facilitate lead entry into the body at all, as it does not have any relation to lead poisoning or contamination.