Which of the following is a sign of potential lead exposure?

Learning disabilities and behavioral issues are recognized as significant signs of potential lead exposure. Lead exposure, particularly in young children, can have profound effects on neurological development and cognitive functioning. This exposure can result in various developmental problems, including decreased attention span, difficulties with learning, and behavioral issues such as increased irritability or hyperactivity.

In contrast, the other options do not correlate with lead exposure. Increased physical activity, improved academic performance, and enhanced social interactions typically reflect positive development and are not indicative of lead-related health issues. Understanding these signs is crucial for early identification of lead exposure in children, allowing for timely interventions to mitigate further health risks.