Lead poisoning can cause birth defects, learning disabilities, ADHD.

• A. Birth defects, learning disabilities, ADHD
• B. Hair loss
• C. Increased appetite
• D. Improved memory

Answer: (A)

Lead exposure damages developing nervous systems and fetal development. It can cross the placenta and disrupt brain growth, which often shows up as cognitive and behavioral problems. In children, this includes learning difficulties and attention-related problems that can resemble ADHD. During pregnancy, exposure is linked to adverse birth outcomes, including potential birth defects in some cases. Because the option mentioning birth defects, learning disabilities, and ADHD reflects these well-established effects of lead poisoning, it’s the best choice. The other options don’t align with known health impacts: hair loss, increased appetite, or improved memory are not characteristic consequences of lead exposure.